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CONTENTS INTRODUCTION. 103 BACKGROUND 103 I. The Government’s Case. 104 II. The Defense Case .:. Ill III. Verdicts and Sentences .'. Ill DISCUSSION. Ill I. Constitutional Challenges . Ill A. Seditious Conspiracy Statute and the Treason Clause. Ill B. Seditious Conspiracy Statute and the First Amendment. 114 1. Facial Challenge. 114 2. Application of Section 2384 to Abdel Rahman’s Case. 116 II. Statutory Challenge.;. 118 A. Possession of Foreign Passports under 18 U.S.C. § 1546. 118 III. Pretrial and Trial Challenges. 119 A. Seizure of Passports. 119 B. Jury Voir Dire . 121 C. Severance.;. 122 D. Sufficiency of the Evidence. 122 1. Standard of Review. 122 2. Abdel Rahman. 123 3. Nosair. 126 4. Fadil Abdelgani. 127 5. El-Gabrowny. 128 6. Alvarez. 128 7. Hampton-El. 129 E. Government Overinvolvement. 131 F. Restriction on Cross-Examination . 132 G. Double Jeopardy Arising from Rule 29(a) Motion . 132 H. Exclusion of Expert Testimony. 134 I. Exclusion of Taped Conversations. 138 J. Loss of Exculpatory Evidence. 139 K. Government’s Summation. 140 L. Jury Instructions. 140 1. Transferred Intent. 140 2. Entrapment Defense. 142 3. Intoxication Defense. 142 4. Use of Firearm. 143 M. Ineffective Assistance of Counsel. 143 1. Abdel Rahman. 143 2. El-Gabrowny. 144 3. Elhassan. 144 4. Fadil Abdelgani. 144 N. Claim of Cumulative Errors. 145 TV. Sentencing Challenges. 145 A. Determination of the Sentences. 145 B. Sentencing Claims. 149 1. Use of Treason Guideline as Analogy. 150 2. Whether Each Defendant Was Found to Have Agreed to Levy War for Purposes of Sentencing. 154 3. Challenges to Consecutive Sentences. 154 4. Inchoate Offense Reduction. 158 5. Role-in-the-Offense Adjustment. 159 C. Remand for Reconsideration of El-Gabrowny’s Sentence and for Findings 160 CONCLUSION . 160 PER CURIAM: INTRODU CTION These are appeals by ten defendants convicted of seditious conspiracy and other offenses arising out of a wide-ranging plot to conduct a campaign of urban terrorism. Among the activities of some or all of the defendants were rendering assistance to those who bombed the World Trade Center, see United States v. Salameh, 152 F.3d 88 (2d Cir.1998) (affirming convictions of all four defendants), planning to bomb bridges and tunnels in New York City, murdering Rabbi Meir Kahane, and planning to murder the President of Egypt. We affirm the convictions of all the defendants. We also affirm all of the sentences, with the exception of the sentence of Ibrahim El-Gabrowny, which we remand for further consideration. BACKGROUND Defendants-Appellants Sheik Omar Ab-del Rahman, El Sayyid Nosair, Ibrahim El-Gabrowny, Clement Hampton-El, Amir Abdelgani (“Amir”), Fares Khallafal-la, Tarig Elhassan, Fadil Abdelgani (“Fad-il”), Mohammed Saleh, and Victor Alvarez (collectively “defendants”) appeal from judgments of conviction entered on January 17, 1996, following a nine-month jury trial in the United States District Court for the Southern District of New York (Michael B. Mukasey, District Judge). The defendants were convicted of the following: seditious conspiracy (all defendants); soliciting the murder of Egyptian President Hosni Mubarak and soliciting an attack on American military installations (Abdel Rahman); conspiracy to murder Mubarak (Abdel Rahman); bombing conspiracy (all defendants found guilty except Nosair and El-Gabrowny); attempted bombing (Hampton-El, Amir, Fadil, Khal-lafalla, Elhassan, Saleh, and Alvarez); two counts of attempted murder and one count of murder in furtherance of a racketeering enterprise (Nosair); attempted murder of a federal officer (Nosair); three counts of use of a firearm in relation to a crime of violence (Nosair); possession of a firearm with an obliterated serial number (Nosair); facilitating the bombing conspiracy by shipping a firearm in interstate commerce and using and carrying a firearm in relation to a crime of violence (Alvarez); two counts of assault on a federal officer (El-Gabrowny); assault impeding the execution of a search warrant (El-Gabrowny); five counts of possession of a fraudulent foreign passport, and one count of possession with intent to transfer false identification documents (El-Gabrowny). I. The Government’s Case At trial, the Government sought to prove that the defendants and others joined in a seditious conspiracy to wage a war of urban terrorism against the United States and forcibly to oppose its authority. The Government also sought to prove various other counts against the defendants, all of which broadly relate to the seditious conspiracy. The Government alleged that members of the conspiracy (acting alone or in concert) took the following actions, among others, in furtherance of the group’s objectives: the attempted murder of Hosni Mubarak, the provision of assistance to the bombing of the World Trade Center in New York City on February 26, 1993, and the Spring 1993 campaign of attempted bombings of buildings and tunnels in New York City. In addition, some members of the group were allegedly involved in the murder of Rabbi Meir Ka-hane by defendant Nosair. The Government adduced evidence at trial showing the following: Abdel Rah-man, a blind Islamic scholar and cleric, was the leader of the seditious conspiracy, the purpose of which was “jihad,” in the sense of a struggle against the enemies of Islam. Indicative of this purpose, in a speech to his followers Abdel Rahman instructed that they were to “do jihad with the sword, with the cannon, with the grenades, with the missile ... against God’s enemies.” Govt. Ex. 550 at 22. Abdel Rahman’s role in the conspiracy was generally limited to overall supervision and direction of the membership, as he made efforts to remain a level above the details of individual operations. However, as a cleric and the group’s leader, Abdel Rah-man was entitled to dispense “fatwas,” religious opinions on the holiness of an act, to members of the group sanctioning proposed courses of conduct and advising them whether the acts would be in furtherance of jihad. According to his speeches and writings, Abdel Rahman perceives the United States as the primary oppressor of Muslims worldwide, active in assisting Israel to gain power in the Middle East, and largely under the control of the Jewish lobby. Abdel Rahman also considers the secular Egyptian government of Mubarak to be an oppressor because it has abided Jewish migration to Israel while seeking to decrease Muslim births. Holding these views, Abdel Rahman believes that jihad against Egypt and the United States is mandated by the Qur’an. Formation of a jihad army made up of small “divisions” and “battalions” to carry out this jihad was therefore necessary, according to Ab-del Rahman, in order to beat back these oppressors of Islam including the United States. Tr. 2197. Although Abdel Rahman did not arrive in the United States until 1990, a group of his followers began to organize the jihad army in New York beginning in 1989. At that time, law enforcement had several of the members of the group under surveillance. In July 1989, on three successive weekends, FBI agents observed and photographed members of the jihad organization, including (at different times), Nosair, Hampton-El, Mahmoud Abouhalima, Mohammad Salameh, and Nidal Ayyad (the latter three of whom were later convicted of the World Trade Center bombing, see Salameh, 152 F.3d at 161), shooting weapons, including AK-47’s, at a public rifle range on Long Island. Although Abdel Rahman was in Egypt at the time, Nosair and Abouhalima called him there to discuss various issues including the progress of their military training, tape-recording these conversations for distribution among Abdel Rahman’s followers. Nosair told Abdel Rahman “we have organized an encampment, we are concentrating here.” Govt. Ex. 851 at 2-3. On November 5, 1990, Rabbi Meir Ka-hane, a former member of the Israeli parliament and a founder of the Jewish Defense League, gave a speech at the Marriot East Side Hotel in New York. Kahane was a militant Zionist, who advocated expelling Arabs from Israel. The content of this speech was a plea to American Jews to emigrate and settle in Israel. Nosair and possibly Salameh and Bilal Alkaisi, another member of the group, attended the speech. After the speech, as Kahane stood talking with the crowd, two shots were fired and Kahane was hit in the neck and chest. Nosair, whom witnesses observed with a gun in hand immediately after the shooting, then ran toward the rear door of the room, trailed by one of the onlookers. At the door, 70-year-old Irving Franklin sought to impede Nosair’s flight. Nosair shot Franklin in the leg, and fled the room. Outside the hotel Nosair encountered uniformed postal police officer Carlos Acosta. Acosta tried to draw his weapon and identify himself, but before he could fire, No-sair fired two shots at him. The first of these shots hit Acosta in the chest but was deflected into his shoulder by a bulletproof vest he was wearing, and the second just missed Acosta’s head. Despite being shot, Acosta returned fire, hitting Nosair in the neck. Nosair fell to the ground, dropping his weapon, a .357 caliber magnum revolver, at his side. Acosta recovered the weapon and detained Nosair. Ballistics testing showed that the weapon recovered from Nosair was the weapon that fired projectiles found in the room in which Kahane and Franklin had been shot, as well as in the area Acosta had been shot. Subsequent to these events, law enforcement personnel executed search warrants for Nosair’s home, car, and work lockers. Among the items seized in these searches was a handwritten notebook, in which No-sair stated that to establish a Muslim state in the Muslim holy lands it would be necessary: to break and destroy the morale of the enemies of Allah. (And this is by means of destroying) (exploding) the structure of their civilized pillars. Such as the touristic infrastructure which they are proud of and their high world buildings which they are proud of and their statues which they endear and the buildings in which they gather their heads (leaders). Tr. 3962-63. While Nosair was at the prison ward of Bellevue Hospital following the shooting, Nosair stated in response to a question from a treating physician that he had no choice but to kill Kahane, and that it was his “duty.” Tr. 9244-46. After Nosair was moved from Bellevue to Rikers Island, he began to receive a steady stream of visitors, most regularly his cousin El-Ga-browny, and also Abouhalima, Salameh, and Ayyad. During these visits, as well as subsequent visits once Nosair was at Attica, Nosair suggested numerous terrorist operations including the murders of the judge who sentenced him and of Dov Hi-kind, a New York City Assemblyman, and chided his visitors for doing nothing to further the jihad against the oppressors. Nosair also tape recorded messages while in custody, including one stating: God the Almighty ... will facilitate for the believers to penetrate the lines no matter how strong they are, and the greatest proof of that [is] what happened in New York. God the Almighty enabled His extremely brave people, with His great power, to destroy one of the top infidels. They were preparing him to dominate, to be the Prime Minister some day. They were preparing him despite their assertion that they reject his agenda ... and that he is a racist. Govt. Ex. 163R2 at 1. During Nosair’s state trial in 1991, an FBI informant, Emad Salem, began to befriend various of Abdel Rahman’s followers in an attempt to infíltrate the jihad organization. At that trial, Salem met El-Ga-browny, Nosair’s cousin, who was raising money to aid in Nosair’s defense. Salem also met other regular attendees such as Siddig Ibrahim Siddig Ali, Abouhalima, Ali Shinawy, Hamdi Moussa, and Ahmed Ab-del Sattar. Salem, accompanied by El-Gabrowny, also met with Nosair. El-Ga-browny introduced Salem as “a new member in the family.” Tr. 4713-15. As a result of these contacts, Salem traveled to Detroit with Abdel Rahman and others to attend a conference on the Islamic economy. During this trip, Salem, seeking to ingratiate himself to Abdel Rah-man, informed Abdel Rahman of his prior service in the Egyptian military during the 1973 conflict with Israel. Abdel Rahman told Salem that this was not jihad because he had been paid to fight by an infidel government. Abdel Rahman also told Salem that he could make up for this, however, by assassinating Mubarak, a “loyal dog to the Americans.” Tr. 4633-34. Before the Nosair trial ended, Salem was invited "for dinner at El-Gabrowny’s house. During dinner, El-Gabrowny indicated he was concerned about being bugged by the FBI, turned up the television, and then discussed construction of high-powered explosives with Salem. Salem testified that after this dinner at El-Gabrowny’s house, bombing became a frequent topic of conversation between them. By early 1992, Abdel Rahman had also welcomed Salem into the group. Abdel Rahman specifically praised Salem for attempting to restart paramilitary training with the group, noting that there would come a day when the training would be needed. Mohammad Saad, the cousin of Sattar and a participant in the jihad group, developed a plan to get Nosair out of jail and confided the plan to Salem. Salem repeated the plan to El-Gabrowny, who cautioned them to slow down and await the outcome of Nosair’s appeal. After being badgered by Nosair to take action, El-Gabrowny met with Salem and told him that he was in touch with “underground people” who could help them construct bombs. Tr. 4730-31. El-Gabrowny instructed Salem on the superiority of remote detonators rather than timers, describing to Salem how a remote detonator could assist in bombing Dov Hikind. In June 1992 El-Gabrowny visited No-sair again in prison. Upon his return, he instructed Salem and Shinawy that Nosair wanted to see them. Salem testified that, when they made the visit, Nosair berated them for not proceeding with bombing plans and directed Shinawy to seek a fatwa from Abdel Rahman approving the bombings. On the way home from the visit, Shinaway told Salem that the planned operation would involve twelve bombs. Shinawy also explained that they would need guns in case they encountered police during the deployment, indicating that his source for firearms was Hampton-El. Two days later Salem went to El-Ga-browny’s house and found Shinawy already there. The three agreed that they would try to secure a “safehouse” for constructing bombs, and El-Gabrowny committed to attempt to obtain detonators from Afghanistan. A few days later, Shinawy summoned Salem to the Abu Bakr Mosque where he introduced Salem to Hampton-El. Salem and Shinaway explained to Hampton-El that they were making bombs but that they were having trouble getting detonators. Hampton-El said that he had access to “ready-made bombs” for $900 to $1,000 apiece. Tr. 4932-33, 6485-86. He also offered to obtain a handgun for Salem. A few days later Shinaway gave Salem a handgun presumably from Hampton-El. In early July 1992, a rift developed between Salem and the FBI, and it was agreed that Salem’s undercover investigation would be terminated. To explain his disappearance, Salem told El-Gabrowny that he needed to go to Spain for a while to take care of a problem in his jewelry business. In late 1992, the paramilitary training resumed, led by Siddig Ali and Hampton-El on weekends between October 1992 and February 1993. Defendants Amir and Fadil Abdelgani and Elhassan all participated in the training camp, as did Abdo Haggag, an Egyptian spy who testified for the Government during the trial. The purpose of the training was to teach the participants jihad tactics. There was talk that jihad was needed in Bosnia, and that some of the trainees might go there. As Siddig Ali iater explained to Salem, the training was meant to prepare the trainees for jihad wherever it was needed. During training, Siddig Ali reported to Abdel Rah-man, and Abdel Rahman offered his insights into the training. In the midst of this training, Hampton-El sought detonators and “clean” guns from Garrett Wilson, a cooperating witness for the U.S. Naval Investigative Service, who testified for the Government at trial. Tr. 10748-60. Hampton-El explained that he wanted to train a group of people in “commando tactics” and, discussed training techniques and bomb identification. Tr. 10758-59. During this time, Ramzi Yousef (another compatriot who was later convicted of the World Trade Center bombing, see Salameh, 152 F.3d at 161) arrived in the United States. Abdel Rahman was making numerous calls to overseas numbers, including a Pakistan number which Yousef had inscribed in a bomb making pamphlet. Abdel Rahman, Salameh, and Yousef also made several calls to the same number in Pakistan in November 1992. Nosair, speaking with his wife from prison, said, “[A]nd what will happen in New York, God willing, it will be ... because of my prayers.” Govt. Ex. 128T at 7. In January 1993, Abdel Rahman appeared at a conference in Brooklyn, and voiced his beliefs in violent jihad. Abdel Rahman further stated that being called terrorists was fine, so long as they were terrorizing the enemies of Islam, the foremost of which was the United States and its allies. While building the World Trade Center bomb, the builders kept in close phone contact with El-Gabrowny and Ab-del Rahman. Salameh and Yousef repeatedly called El-Gabrowny at home and at the Abu Bakr Mosque and Abdel Rah-man at home. In December 1992 and January 1993, El-Gabrowny visited Nosair at Attica and later arranged for the World Trade Center bombers to visit Nosair in the weeks preceding the bombing (Abo-uhalima visited Nosair on January 2 and February 7, and Salameh visited him on February 13). On February 24, 1993, Salameh rented a van to be used in the World Trade Center bombing. As identification, he used a New York license bearing his own name and El-Gabrowny’s address. As Ayyad was making arrangements to purchase the hydrogen gas to be used in the World Trade Center bomb, he called El-Gabrowny. On February 26, 1993, the World Trade Center complex was bombed, causing six deaths and massive destruction. On March 4,1993, federal agents executed a search warrant for El-Gabrowny’s home. Salameh’s use of El-Gabrowny’s address when renting the van used in the bombing provided the basis for the warrant. The warrant allowed a search for explosives and related devices. The search of El-Gabrowny’s home revealed, among other things, stun guns and taped messages from Nosair urging fighting and jihad in response to the Jewish immigration to Israel. Just prior to executing the search warrant, the agents encountered El-Gabrowny as he left the building and then, seeing them, started back toward it. The agents stopped and frisked him. El-Gabrowny became belligerent and assaulted two agents. On his person, the agents found five fraudulent Nicaraguan passports and birth certificates with pictures of Nosair and his wife and children. After the bombing of the World Trade Center, Salem again began working for the FBI as an informant. In March of 1993, President Mubarak was scheduled to visit New York. Certain members of Abdel Rahman’s group saw this visit as an opportunity to assassinate him, in the words of Siddig Ali, “to execute the desire of the Sheik.” Tr. 10087-89, 10295-96. In seeking financing for this plan, Siddig Ali called a man in the United Arab Emirates for funding, stating that Abdel Rahman would vouch for him. Siddig Ali also contacted a source in the Sudanese government to get a copy of Mubarak’s itinerary while in New York. Siddig Ali described the plan to Abdo Mohammed Haggag, an Abdel Rahman confidant who later cooperated with the Egyptian and United States authorities, and noted that it would be carried out by participants in the paramilitary training including Elhassan and Amir Abdelgani. Siddig Ali said that those men would assist and did not need to be told anything until the last moment. Haggag confronted Amir about the plan. Amir said that Siddig Ali had not informed him but that he was ready for any operation when called. Nothing came of this plan because Haggag secretly gave the Egyptian government information about the plot, and the New York part of Mubarak’s trip to the United States was canceled. Siddig Ali then proposed a new round of bombings. In late April 1993, he became friendly with Salem, who was, by that point, tape recording his conversations for the FBI. Salem agreed to assist Siddig Ali in putting together the bombs but stated that he would have no part in deploying them. After contemplating bombing a U.S. armory, Siddig Ali proposed bombing the United Nations complex. When initially discussing this plan with Salem, he stated that Abdel Rahman had approved the attack on the United Nations, and had called it not merely permissible, but a “must” and a “duty.” Tr. 5527-28. Siddig Ali invited Salem to discuss these matters directly with Abdel Rahman, but reminded him that because of the surveillance, to use caution in so doing. Caution, as defined by Siddig Ali, included phrasing statements in a broad and general manner, and assuring that Abdel Rahman was insulated from active involvement in the plot. Salem met with Siddig Ali again on May 12, pretending that he had surveyed locations for use as a bomb-making safehouse and that he had settled on a garage in Queens that was renting for $1,000 a month. This safehouse was actually rented by the FBI, and the FBI installed videocameras and surveillance equipment in the safehouse before members of the group began using it. Taking Siddig Ali up on his earlier invitation, Salem had a private conversation with Abdel Rahman on the night of May 23, 1993. At the bidding of Siddig Ali, Salem began the conversation by pledging allegiance to Abdel Rahman. Salem then told Abdel Rahman that he and Siddig Ali were planning to “do a job.” Govt. Ex. 311T at 3. Salem explicitly asked Abdel Rahman about the United Nations. Abdel Rahman replied that bombing the United Nations was “not illicit, however will be bad for Muslims.” Id. at 6-7. Abdel Rah-man instead told Salem to “Find a plan, find a plan ... to inflict damage on the American army itself.” Id. Salem then asked about a strike on the FBI headquarters in New York. Abdel Rahman told him to “wait for a while,” and to “plan carefully.” Id. at 7. Salem recounted this conversation to Siddig Ali, who stated that when he had discussed the United Nations issue with Abdel Rahman, Abdel Rahman had been in favor of the plan. Subsequently, in discussing the plan to bomb the United Nations with Hampton-El, Siddig Ali told him that he had received an “official fat-tua” from Abdel Rahman regarding the plan. Govt. Ex. 315T at 7-9.. Siddig Ali also told Khallafalla and Amir Abdelgani the same thing, stating the Abdel Rah-man’s approval was necessary whenever one did something “basically unlawful,” which would be wrong unless the “mission [was] under the flag of God and his messenger.” Govt. Ex. 320T at 7-9. As a result of the failure of the plan to execute Mubarak, there was some speculation by members of the group that Siddig Ali was an informer. Siddig Ali and Salem conversed one day with Abdel Rahman about the issue. Abdel Rahman voiced his suspicions that Siddig Ali was the informer. Ironically, Salem secretly tape recorded this conversation for the Government. During the conversation, Abdel Rahman revealed that Abouhalima, one of the World Trade Center bombers, was supposed to have fled to Sudan, not to Egypt, where he was subsequently arrested after the bombing. After the discussion, Siddig Ali told Salem that Abdel Rahman had ordered that they be circumspect when discussing their plans with him so that he would not be incriminated. On May 27, 1993, Siddig Ali introduced Salem to Amir Abdelgani and Khallafalla near the Medina Mosque. The four then traveled to the safehouse where they discussed the bombing plans. At that time Siddig Ali indicated he wanted to bomb the United Nations and the Lincoln and Holland Tunnels. Siddig Ah outlined the proposed plan for three explosions five minutes apart, sometimes sketching on a piece of cardboard. The cardboard was later recovered at the safehouse. Over the next few days, Siddig Ali and Amir Abdelgani (once accompanied by Salem) drove together to the Lincoln and Holland tunnels, the United Nations, and the Federal Building in Manhattan to scout the targets and examine traffic conditions. During one of these scouting trips, Amir suggested that they consider bombing the diamond district in Manhattan because that would be like “hitting Israel itself.” Govt. Ex. 323T at 6-9. At the United Nations, Siddig Ali noted that a bomb detonated at the entrance would topple the building. The men later gathered at the safehouse to discuss the operation. On May 30, 1993, Hampton-El met with Siddig Ali and Salem at Hampton-El’s safehouse, which he used for conducting business. Siddig Ali and Salem explained that they needed detonators, and Hampton-El said he would try to locate some for them. The three discussed the plan to blow up the United Nations and the tunnels. On June 4,1993, Siddig Ali arranged to go with Salem to meet Mohammed Sa-leh. Siddig Ali explained to Salem that Saleh was an important supporter of jihad activities who might assist in the bombing campaign. Saleh was the owner of two gasoline stations in Yonkers, New York. During dinner at Saleh’s house, Siddig Ali explained the bombing plan to Saleh, noting the different targets on a piece of paper. Salem was asked by Siddig Ali to eat the piece of paper once Siddig Ali felt that Saleh understood the plan. During dinner, Saleh agreed to help purchase military equipment. Over the next few weeks, Siddig Ali brought Alvarez and Elhassan into the group. Various members of the group began to collect the items they believed were needed to prepare the bombs. The group also met frequently to refine the bombing plan. On June 13, 1993, Salem and Khallafalla purchased two timers for the bombs in Chinatown. On June 15 and 18, Hampton-El left messages for Siddig Ali indicating that he was still searching for detonators. On June 19, Amir Abdel-gani, Khallafalla, Salem, Alvarez, and Sid-dig Ali met at Siddig Ali’s house to discuss the details of the plan, including the number of people and bombs needed to carry it out. Siddig Ali indicated that they needed fertilizer, fuel, and stolen cars. Amir, Alvarez, and Salem attempted on the evening of June 19 to buy stolen cars to deliver the bombs and to use as getaway cars during the bombing. Although they located a source for stolen cars, they did not have sufficient funds to purchase the cars. That same day, Elhassan met with a friend who was an engineer to discuss the feasibility of blowing up the tunnels and to determine where the weakest points of the tunnels were located. On June 21, 1993, the group met at the Abu Bakr Mosque’ and drove to the safe-house. Amir, Siddig Ali, and Elhassan discussed a method of communicating at the tunnels so that both of them would ■blow up at the same time, and planned their escapes after the bombing. Amir and Siddig Ali advised everyone that, if they were caught, not to talk until their lawyers were present. That evening Alvarez tried again, unsuccessfully, to obtain cars for the operation. On June 22, 1993, after buying five 55-gallon steel barrels from a Newark drum business, Siddig Ali and Amir went to Saleh’s gas station to get fuel for the bombs. Saleh agreed over the phone to provide the fuel. Belhabri, Saleh’s employee, filled two of the drums with $140 worth of diesel fuel. Saleh agreed to keep two of the empty barrels in his garage. Siddig Ali and Amir did not pay for the fuel, but Belhabri made out a receipt on which he recorded the license plate of the van. Siddig Ali wrote a phony signature on the receipt. The next day, June 23, Amir returned to Saleh’s gas station with Fadil to fill the remaining three 55-gallon drums with diesel fuel. They met Saleh who called his employee at the other station to tell him to wait for the two so that they could get fuel before the station closed. Amir called Sid-dig Ali and asked if he could tell Fadil the bombing plan since Amir thought that Fadil would eventually catch on. Siddig Ali gave him permission to tell Fadil. Amir and Fadil obtained fuel. When Bel-habri wrote out a receipt, Amir objected and called Saleh who then told Belhabri not to put the license number on the receipt but just to write “Sudanese.” Belha-bri provided $151 worth of fuel. At the same time, Siddig Ali and Salem were purchasing more fertilizer for the bombs. Later in the day, Alvarez gave Siddig Ali a 9mm semi-automatic rifle with an empty 25-round magazine. Siddig Ali and Salem took the gun from Alvarez’s apartment in New Jersey to the safehouse. A little after 8 p.m. that evening, Amir and Fadil arrived at the safehouse with the fuel. Amir then washed down the van so that there would be no traces left of the fuel. For the next hour, Amir, Fadil, Sid-dig Ali, and Salem discussed the bombing plan. At one point, Fadil was asked whether he would participate, and he responded that he had to perform an Istik-hara prayer (a prayer seeking divine intervention to guide one’s decision in a course of action). After going to the Mosque to pray, Fadil met Elhassan and Alvarez, and they drove back to the safehouse. Back at the safehouse, Amir began mixing the fuel and the fertilizer, and watched a videotape showing the tunnels that had been shot earlier in the day by Siddig Ali and Salem. Elhassan, Alvarez, and Fadil then returned, joined Amir, and began stirring the fuel and fertilizer together. They discussed the timers and the placement of bombs. At about 2 a.m. on the morning of June 24, FBI agents raided the safehouse and arrested the defendants, seizing the fuel and fertilizer mixture and the cardboard diagram Siddig Ali had periodically used to sketch the bombing plan. A few hours before arrests were made at the safehouse, FBI agents arrested Sa-leh at his apartment in Yonkers. At FBI headquarters, Saleh denied having sold fuel to the men but said that Salem had come to his station demanding fuel on two occasions. About a week later on July 5, 1993, Saleh called one of his employees from prison and instructed him to tell Bel-habri to destroy the two receipts documenting the fuel given to the Abdelganis and Siddig Ali. Saleh said that it would be “dangerous” for Belhabri if he failed to follow these instructions. II. The Defense Case The defendants presented their case for two months, calling 71 witnesses. Hampton-El, Elhassan, Alvarez, and Fadil Ab-delgani each testified on his own behalf. The specific defenses put forth by the individual defendants will be set out below as they become relevant to particular claims on appeal. Siddig Ali, among others, was charged in the same indictment as the defendants but was not part of the trial because he pleaded guilty to all counts with which he was charged and cooperated, to a degree, with the Government. III. Verdicts and Sentences The jury trial in the case ran from January 9, 1995, to October 1, 1995. The jury returned verdicts finding defendants guilty on all submitted charges, except that No-sair and El-Gabrowny obtained not guilty verdicts on the Count Five bombing conspiracy charges. The defendants were sentenced as follows: Abdel Rahman and Nosair, life imprisonment; El-Gabrowny, 57 years; Alvarez, Hampton-El, Elhassan, and Saleh, 35 years; Amir Abdelgani and Khallafalla, 30 years; Fadil Abdelgani, 25 years. The sentences are more fully explained in Part IV(A), infra. DISCUSSION I. Constitutional Challenges A. Seditious Conspiracy Statute and the Treason Clause Defendant Nosair (joined by other defendants) contends that his conviction for seditious conspiracy, in violation of 18 U.S.C. § 2384, was illegal because it failed to satisfy the requirements of the Treason Clause of the U.S. Constitution, Art. Ill, § 3. Article III, Section 3 provides, in relevant part: Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort. No Person shall be convicted of Treason unless on the Testimony of two Witnesses to the same overt Act, or on Confession in open Court. The seditious conspiracy statute provides: If two or more persons in any State or Territory, or in any place subject to the jurisdiction of the United States, conspire to overthrow, put down or to destroy by force the Government of the United States, or to levy war against them, or to oppose by force the authority thereof, or by force to prevent, hinder , or delay the execution of any law of the United States, or by force to seize, take, or possess any property of the United States contrary to the authority thereof, they shall each be fined under this title or imprisoned not more than twenty years, or both. 18 U.S.C. § 2384. Nosair contends that because the seditious conspiracy statute punishes conspiracy to “levy war” against the United States without a conforming two-witness requirement, the statute is unconstitutional. He further claims that because his conviction for conspiracy to levy war against the United States was not based on the testimony of two witnesses to the same overt act, the conviction violates constitutional standards. It is undisputed that Nosair’s conviction was not supported by two witnesses to the same overt act. Accordingly the conviction must be overturned if the requirement of the Treason Clause applies to this prosecution for seditious conspiracy. The plain answer is that the Treason Clause does not apply to the prosecution. The provisions of Article III, Section 3 apply to prosecutions for “treason.” No-sair and his co-appellants were not charged with treason. Their offense of conviction, seditious conspiracy under Section 2384, differs from treason not only in name and associated stigma, but also in its essential elements and punishment. In the late colonial period, as today, the charge of treason carried a “peculiar intimidation and stigma” with considerable “potentialities ... as a political epithet.” See William Hurst, Treason in the United States (Pt. II), 58 Harv.L.Rev. 395, 424-25 (1945). At the time of the drafting of the Constitution, furthermore, treason was punishable not only by death, but by an exceptionally cruel method of execution designed to enhance the suffering of the traitor. See 4 William Blackstone, Commentaries *92 (observing that the punishment for treason is “terrible” in that the traitor is “hanged by the neck, then cut down alive,” that “his entrails [are then] taken out, and burned, while he is yet alive,” “that his head [is] cut off,” and that his “body [is then] divided into four parts”). In contrast, lesser subversive offenses were penalized by non-capital punishments or less brutal modes of execution. See id. at *94-*126. The Framers may have intended to limit the applicability of the most severe penalties— or simply the applicability of capital punishment for alleged subversion—to instances of levying war against, or adhering to enemies of, the United States. See Hurst, supra, at 425 n. 141 (indicating that at least some delegates “regarded the effort to limit the application of the death penalty for subversive crimes as the central motive of the restrictive definition of treason”). Today treason continues to be punishable by death, while seditious conspiracy commands a maximum penalty of twenty years imprisonment. In recognition of the potential for political manipulation of the treason charge, the Framers may have formulated the Treason Clause as a protection against promiscuous resort to this particularly stigmatizing label, which carries such harsh consequences. It is thus possible to interpret the Treason Clause as applying only to charges denominated as “treason.” The Supreme Court has identified but not resolved the question whether the clause applies to offenses that include all the elements of treason but are not branded as such. Compare Ex Parte Quirin, 317 U.S. 1, 38, 63 S.Ct. 2, 87 L.Ed. 3 (1942) (suggesting, in dictum, that citizens could be tried for an offense against the law of war that included all the elements of treason), with Cramer v. United States, 325 U.S. 1, 45, 65 S.Ct. 918, 89 L.Ed. 1441 (1945) (noting in dictum that it did not “intimate that Congress could dispense with [the] two-witness rule merely by giving the same offense [of treason] another name.”) The question whether a defendant who engaged in subversive conduct might be tried for a crime involving all the elements of treason, but under a different name and without the constitutional protection of the Treason Clause, therefore remains open. And we need not decide it in this case, because the crime of which Nosair was convicted differs significantly from treason, not only in name and punishment, but also in definition. Seditious conspiracy by levying war includes no requirement that the defendant owe allegiance to the United States, an element necessary to conviction of treason. See 18 U.S.C. § 2381 (defining “allegiance to United States” as an element of treason). Nosair nevertheless maintains that “[t]he only distinction between the elements of seditious conspiracy under the levy war prong and treason by levying war is that the former requires proof of a conspiracy while the latter requires proof of the substantive crime.” Reply Brief for Nosair at 9. Noting that the requirement of allegiance appears explicitly in the treason statute, but not in the Treason Clause, Nosair suggests that allegiance to the United States is not an element of treason within the contemplation of the Constitution. He concludes that, for constitutional purposes, the elements constituting seditious conspiracy by levying war and treason by levying war are identical, and consequently that prosecutions for seditious conspiracy by levying war must conform to the requirements of the Treason Clause. The argument rests on a false premise. The Treason Clause does not, as Nosair supposes, purport to specify the elements of the crime of treason. Instead, in addition to providing evidentiary safeguards, the Clause restricts the conduct that may be deemed treason to “levying war” against the United States and “adhering to their Enemies, giving them Aid and Comfort.” It does not undertake to define the constituent elements of the substantive crime. Moreover, any acceptable recitation of the elements of treason must include the breach of allegiance. The concept of allegiance betrayed is integral to the term “treason,” and has been since well before the drafting of the Constitution. See 3 Holdsworth, History of English Law 287 (noting that “the idea of treachery” has been part of the treason offense since the reign of Edward III). In both “its common-law and constitutional definitions the term ‘treason’ imports a breach of allegiance.” Green’s Case, 8 Ct.Cl. 412, 1872 WL 5731 (1872). Treason “imports a betraying.” Id. (quoting 3 Tomlin’s Law Dictionary 637). Blackstone, too, noted that treason, “in it’s [sic ] very name ... imports a betraying, treachery or breach of faith.” 4 Blackstone, supra, at *75. Early on, our Supreme Court recognized that “[t]reason is a breach of allegiance, and can be committed by him only who owes allegiance.” United States v. Wiltberger, 18 U.S. (5 Wheat.) 76, 97, 5 L.Ed. 37 (1820) (Marshall, C.J.). Nor is there any doubt that the delegates to the Constitutional Convention “used [the term ‘treason’] to express the central concept of betrayal of allegiance.” Hurst, supra, at 415. Nosair’s suggestion that the statutory definition of treason added the requirement of allegiance is mistaken. The reference to treason in the constitutional clause necessarily incorporates the elements of allegiance and betrayal that are essential to the concept of treason. Cf. Wiltberger, 18 U.S. at 97 (noting that the inclusion of the words “owing allegiance” in a statute punishing treason are surplus-age because the concept is implicit in the term). The functions of the Clause are to limit the crime of treason to betrayals of allegiance that are substantial, amounting to levying war or giving comfort to enemies, and to require sufficiently reliable evidence. Treason, in other words, may not be found on the basis of mere mutterings of discontent, or relatively innocuous opposition. The fact that the Treason Clause imposes its requirements without mentioning the requirement of allegiance is not a basis for concluding that treason may be prosecuted without allegiance being proved. That any conviction for treason under the laws of the United States requires a betrayal of allegiance is simply implicit in the term “treason.” Nosair was thus tried for a different, and lesser, offense than treason. We therefore see no reasonable basis to maintain that the requirements of the Treason Clause should apply to Nosair’s prosecution. Cf. United States v. Rodriguez, 803 F.2d 318, 320 (7th Cir.1986) (rejecting argument that “oppose by force” prong of Section 2384 conflicts with Treason Clause). B. Seditious Conspiracy Statute and the First Amendment Abdel Rahman, joined by the other appellants, contends that the seditious conspiracy statute, 18 U.S.C. § 2384, is an unconstitutional burden on free speech and the free exercise of religion in violation of the First Amendment. First, Abdel Rah-man argues that the statute is facially invalid because it criminalizes protected expression and that it is overbroad and unconstitutionally vague. Second, Abdel Rahman contends that his conviction violated the First Amendment because it rested solely on his political views and religious practices. 1. Facial Challenge a. Restraint on Speech. Section 2384 provides: If two or more persons in any State or Territory, or in any place subject to the jurisdiction of the United States, conspire to overthrow, put down, or destroy by force the Government of the United States, or to levy war against them, or to oppose by force the authority thereof, or by force to prevent, hinder, or delay the execution of any law of the United States, or by force to seize, take, or possess any property of the United States contrary to the authority thereof, they shall be fined under this title or imprisoned not more than twenty years, or both. 18 U.S.C. § 2384. As Section 2384 proscribes “speech” only when it constitutes an agreement to use force against the United States, Abdel Rahman’s generalized First Amendment challenge to the statute is without merit. Our court has previously considered and rejected a First Amendment challenge to Section 2384. See United States v. Lebron, 222 F.2d 531, 536 (2d Cir.1955). Although Lebrón’s analysis of the First Amendment issues posed by Section 2384 was brief, the panel found the question was squarely controlled by the Supreme Court’s then-recent decision in Dennis v. United States, 341 U.S. 494, 71 S.Ct. 857, 95 L.Ed. 1137 (1951). In Dennis, the Court upheld the constitutionality of the Smith Act, which made it a crime to advocate, or to conspire to advocate, the overthrow of the United States government by force or violence. See 18 U.S.C. § 2385; Dennis, 341 U.S. at 494, 71 S.Ct. 857. The Dennis Court concluded that, while the “element of speech” inherent in Smith Act convictions required that the Act be given close First Amendment scrutiny, the Act did not impermissibly burden the expression of protected speech, as it was properly “directed at advocacy [of overthrow of the government by force], not discussion.” See id. at 502, 71 S.Ct. 857. After Dennis, the Court broadened the scope of First Amendment restrictions on laws that criminalize subversive advocacy. It remains fundamental that while the state may not criminalize the expression of views — even including the view that violent overthrow of the government is desirable — it may nonetheless outlaw encouragement, inducement, or conspiracy to take violent action. Thus, in Yates v. United States, 354 U.S. 298, 318, 77 S.Ct. 1064, 1 L.Ed.2d 1356 (1957), overruled in part on other grounds, Burks v. United States, 437 U.S. 1, 7, 98 S.Ct. 2141, 57 L.Ed.2d 1 (1978), the Court interpreted the Smith Act to prohibit only the advocacy of concrete violent action, but not “advocacy and teaching of forcible overthrow as an abstract principle, divorced from any effort to instigate action to that end.” And in Brandenburg v. Ohio, 395 U.S. 444, 447, 89 S.Ct. 1827, 23 L.Ed.2d 430 (1969) (per curiam), the Court held that a state may proscribe subversive advocacy only when such advocacy is directed towards, and is likely to result in, “imminent lawless action.” The prohibitions of the seditious conspiracy statute are much further removed from the realm of constitutionally protected speech than those at issue in Dennis and its progeny. To be convicted under Section 2384, one must conspire to use force, not just to advocate the use of force. We have no doubt that this passes the test of constitutionality. Our view of Section 2384’s constitutionality also finds support in a number of the Supreme Court’s more recent First Amendment decisions. These cases make clear that a line exists between expressions of belief, which are protected by the First Amendment, and threatened or actual uses of force, which are not. See Wisconsin v. Mitchell, 508 U.S. 476, 484, 113 S.Ct. 2194, 124 L.Ed.2d 436 (1993) (“A physical assault is not ... expressive conduct protected by the First Amendment”); R.A.V. v. City of St. Paid, 505 U.S. 377, 388, 112 S.Ct. 2538, 120 L.Ed.2d 305 (1992) (“[T]hreats of violence are outside the First Amendment”); NAACP v. Claiborne Hardware Co., 458 U.S. 886, 916, 102 S.Ct. 3409, 73 L.Ed.2d 1215 (1982) (“The First Amendment does not protect violence”); Watts v. United States, 394 U.S. 705, 707, 89 S.Ct. 1399, 22 L.Ed.2d 664 (1969) (Congress may outlaw threats against President, provided that “[w]hat is a threat [is] distinguished from what is constitutionally protected speech.”); see also Hoffman v. Hunt, 126 F.3d 575, 588 (4th Cir.1997) (upholding constitutionality of Freedom of Access to Clinic Entrances Act, as Act prohibits only use of force, physical obstruction, or threats of force); Terry v. Reno, 101 F.3d 1412, 1418-20 (D.C.Cir.1996) (same); Cheffer v. Reno, 55 F.3d 1517, 1521 (11th Cir.1995) (same). b. Vagueness and Overbreadth. Abdel Rahman also contends that Section 2384 is overbroad and void for vagueness. See Village of Hoffman Estates v. Flipside, Hoffman Estates, Inc., 455 U.S. 489, 494-95, 102 S.Ct. 1186, 71 L.Ed.2d 362 (1982). (i) Overbreadth. A law is over-broad, and hence void, if it “does not aim specifically at evils within the allowable area of State control, but, on the contrary, sweeps within its ambit other activities that ... constitute an exercise of freedom of speech or of the press.” Thornhill v. Alabama, 310 U.S. 88, 97, 60 S.Ct. 736, 84 L.Ed. 1093 (1940). Particularly when conduct and not speech is involved, to void the statute the overbreadth must be “real [and] substantial ... judged in relation to the statute’s plainly legitimate sweep.” Broadrick v. Oklahoma, 413 U.S. 601, 613, 93 S.Ct. 2908, 37 L.Ed.2d 830 (1973); see also City Council of Los Angeles v. Taxpayers for Vincent, 466 U.S. 789, 799-800 & 800 n. 19, 104 S.Ct. 2118, 80 L.Ed.2d 772 (1984). We recognize that laws targeting “sedition” must be scrutinized with care to assure that the threat of prosecution will not deter expression of unpopular viewpoints by persons ideologically opposed to the government. But Section 2384 is drawn sufficiently narrowly that we perceive no unacceptable risk of such abuse. Abdel Rahman argues that Section 2384 is overbroad because Congress could have achieved its public safety aims “without chilling First Amendment rights” by punishing only “substantive acts involving bombs, weapons, or other violent acts.” Abdel Rahman Br. at 67. One of the beneficial purposes of the conspiracy law is to permit arrest and prosecution before the substantive crime has been accomplished. The Government, possessed of evidence of conspiratorial planning, need not wait until buildings and tunnels have been bombed and people killed before arresting the conspirators. Accordingly, it is well established that the Government may criminalize certain preparatory steps towards criminal action, even when the crime consists of the use of conspiratorial or exhortatory words. See, e.g., United States v. Jeter, 775 F.2d 670, 678 (6th Cir.1985). Because Section 2384 prohibits only conspiratorial agreement, we are satisfied that the statute is not constitutionally overbroad. (ii) Vagueness. Abdel Rah-man also challenges the statute for vagueness. A criminal statute, particularly one regulating speech, must “define the criminal offense with sufficient definiteness that ordinary people can understand what conduct is prohibited and in a manner that does not encourage arbitrary and discriminatory enforcement.” Kolender v. Lawson, 461 U.S. 352, 357, 103 S.Ct. 1855, 75 L.Ed.2d 903 (1983); see also Hoffman Estates, 455 U.S. at 499, 102 S.Ct. 1186. Abdel Rahman argues that Section 2384 does not provide “fair warning” about what acts are unlawful, leaving constitutionally protected speech vulnerable to criminal prosecution. There is indeed authority suggesting that the word “seditious” does not sufficiently convey what conduct it forbids to serve as an essential element of a crime. See Keyishian v. Board of Regents, 385 U.S. 589, 598, 87 S.Ct. 675, 17 L.Ed.2d 629 (1967) (noting that “dangers fatal to First Amendment freedoms inhere in the word ‘seditious,’ ” and invalidating law that provided, inter alia, that state employees who utter “seditious words” may be discharged). But the word “seditious” does not appear in the prohibitory text of the statute; it appears only in the caption. The terms of the statute are far more precise. The portions charged against Ab-del Rahman and his co-defendants — conspiracy to levy war against the United States and to oppose by force the authority thereof — do not involve terms of such vague meaning. Furthermore, they unquestionably specify that agreement to use force is an essential element of the crime. Abdel Rahman therefore cannot prevail on the claim that the portions of Section 2384 charged against him criminalize mere expressions of opinion, or are unduly vague. 2. Application of Section 2384 to Abdel Rahman’s Case Abdel Rahman also argues that he was convicted not for entering into any conspiratorial agreement that Congress may properly forbid, but “solely for his religious words and deeds” which, he contends, are protected by the First Amendment. In support of this claim, Abdel Rahman cites the Government’s use in evidence of his speeches and writings. There are two answers to Abdel Rahman’s contention. The first is that freedom of speech and of religion do not extend so far as to bar prosecution of one who uses a public speech or a religious ministry to commit crimes. Numerous crimes under the federal criminal code are, or can be, committed by speech alone. As examples: Section 2 makes it an offense to “counsel! ],” “command[],” “induce[]” or “procure[]” the commission of an offense against the United States. 18 U.S.C. § 2(a). Section 371 makes it a crime to “conspire ... to commit any offense against the United States.” 18 U.S.C. § 371. Section 373, with which Abdel Rahman was charged, makes it a crime to “solicit! ], command[ ], induce[ ], or otherwise endeavor! ] to persuade” another person to commit a crime of violence. 18 U.S.C. § 373(a). Various other statutes, like Section 2384, criminalize conspiracies of specified objectives, see, e.g., 18 U.S.C. § 1751(d) (conspiracy to kidnap); 18 U.S.C. § 1951 (conspiracy to interfere with commerce through robbery, extortion, or violence); 21 U.S.C. § 846 (conspiracy to violate drug laws). All of these offenses are characteristically committed through speech. Notwithstanding that political speech and religious exercise are among the activities most jealously guarded by the First Amendment, one is not immunized from prosecution for such speech-based offenses merely because one commits them through the medium of political speech or religious preaching. Of course, courts must be vigilant to insure that prosecutions are not improperly based on the mere expression of unpopular ideas. But if the evidence shows that the speeches crossed the line into criminal solicitation, procurement of criminal activity, or conspiracy to violate the laws, the prosecution is permissible. See United States v. Spook, 416 F.2d 165, 169-71 (1st Cir.1969). The evidence justifying Abdel Rahman’s conviction for conspiracy and solicitation showed beyond a reasonable doubt that he crossed this line. His speeches were not simply the expression of ideas; in some instances they constituted the crime of conspiracy to wage war on the United States under Section 2384 and solicitation of attack on the United States military installations, as well as of the murder of Egyptian President Hosni Mubarak under Section 373. For example: Abdel Rahman told Salem he “should make up with God ... by turning his rifle’s barrel to President Mubarak’s chest, and kill[ing] him.” Tr. 4633. On another occasion, speaking to Abdo Mohammed Haggag about murdering President Mubarak during his visit to the United States, Abdel Rahman told Hag-gag, “Depend on God. Carry out this operation. It does not require a fatwa ... You are ready in training, but do it. Go ahead.” Tr. 10108. The evidence further showed that Siddig Ali consulted with Abdel Rahman about the bombing of the United Nations Headquarters, and Abdel Rahman told him, ‘Yes, it’s a must, it’s a duty.” Tr. 5527-29. On another occasion, when Abdel Rah-man was asked by Salem about bombing the United Nations, he counseled against it on the ground that it would be “bad for Muslims,” Tr. 6029, but added that Salem should “find a plan to destroy or to bomb or to ... inflict damage to the American Army.” Tr. 6029-30. Words of this nature — ones that instruct, solicit, or persuade others to commit crimes of violence — violate the law and may be properly prosecuted regardless of whether they are uttered in private, or in a public speech, or in administering the duties of a religious ministry. The fact that his speech or conduct was “religious” does not immunize him from prosecution under generally-applicable criminal statutes. See Smith, 494 U.S. at 879, 110 S.Ct. 1595, reaffirmed in Boerne, 521 U.S. at 507, 117 S.Ct. 2157. Abdel Rahman also protests the Government’s use in evidence of his speeches, writings, and preachings that did not in themselves constitute the crimes of solicitation or conspiracy. He is correct that the Government placed in evidence many instances of Abdel Rahman’s writings and speeches in which Abdel Rahman expressed his opinions within the protection of the First Amendment. However, while the First Amendment folly protects Abdel Rahman’s right to express hostility against the United States, and he may not be prosecuted for so speaking, it does not prevent the use of such speeches or writings in evidence when relevant to prove a pertinent fact in a criminal prosecution. The Government was free to demonstrate Abdel Rahman’s resentment and hostility toward the United States in order to show his motive for soliciting and procuring illegal attacks against the United States and against President Mubarak of Egypt. See Mitchell, 508 U.S. at 487, 113 S.Ct. 2194 (“The First Amendment ... does not prohibit the evidentiary use of speech to establish the elements of a crime or to prove motive or intent.”); United States v. Hoffman, 806 F.2d 703, 708-09 (7th Cir.1986) (evidence of religious affiliation relevant to show defendant’s motive to threaten President, because defendant leader of religious group was imprisoned by Government at time of threats). Furthermore, Judge Mukasey properly protected against the danger that Abdel Rahman might be convicted because of his unpopular religious beliefs that were hostile to the United States. He explained to the jury the limited use it was entitled to make of the material received as evidence of motive. He instructed that a defendant could not be convicted on the basis of his beliefs or the expression of them — even if those beliefs favored violence. He properly instructed the jury that it could find a defendant guilty only if the evidence proved he committed a crime charged in the indictment. We reject Abdel Rahman’s claim that his conviction violated his rights under the First Amendment. II. Statutory Challenge A. Possession of Foreign Passports under 18 U.S.C. § 1546 El-Gabrowny challenges his convictions on Counts 24 through 28 under 18 U.S.C. § 1546 for possessing five forged Nicaraguan passports (identifying the five members of the Nosair family). He contends the possession of a forged passport of a foreign state is not covered by the statute. The words of the statute do not support his contention. Section 1546(a) states, in relevant part: Whoever knowingly forges ... any immigrant or nonimmigrant visa, permit, border crossing card, alien registration receipt card, or other document prescribed by statute or regulation for entry into ... the United States, or ... possesses ... any such visa, permit, border crossing card, alien registration receipt card, or other document prescribed by statute or regulation for entry into ... the United States, knowing it to be forged [shall be guilty of a crime.] 18 U.S.C. § 1546(a) (emphases added). Section 1546 thus covers the possession of any document prescribed — here used as a synonym for “designated” — by statute or regulation for entry into the United States, knowing it to be forged. Several statutes and regulations prescribe foreign passports as “document[s] ... for entry into the United States.” For example, 8 U.S.C. § 1181 provides, with certain exceptions, that no immigrant shall be admitted into the United States unless at the time of application for admission he ... presents a valid unexpired passport or other suitable travel document, or document of identity and nationality, if such document is required under the regulations issued by the Attorney General. 8U.S.C. § 1181(a). A regulation issued by the Attorney General requires that [a] passport valid for the bearer’s entry into a foreign country at least 60 days beyond the expiration date of his or her immigrant visa shall be presented by each immigrant except an immigrant who [meets certain requirements]. 8 C.F.R. § 211.2(a). Moreover, federal regulations prescribe that [a] valid unexpired visa and an unexpired passport ... shall be presented by each arriving nonimmigrant alien except [as specified in the provision]. 8 C.F.R. § 212.1. Although the statute and regulations cited do not use the word “foreign” to modify “passport,” the passports referred to in these provisions are necessarily ones issued by foreign governments, as they refer to passports presented by aliens, and a United States passport may not be issued except to a national of the United States. See 22 C.F.R. §§ 51.2(a), 51.3(a)-(c), 51.80(a) (United States passport may be revoked by reason of noncitizenship). Thus, a passport issued by a foreign government is clearly a document “prescribed by statute or regulation for entry into ... the United States” and knowing possession of a forged or altered foreign passport is an offense under the plain meaning of Section 1546(a). Accord United States v. Osiemi, 980 F.2d 344, 346 (5th Cir.1993). Because the language of the statute is clear, our inquiry is complete, and we need not examine legislative history. See United States v. Articles of Banned Haza