Full opinion text
MOORE, J., delivered the opinion of the court, in which BOGGS, J., joined. COHN, D.J. (pp. 524-544), delivered a separate dissenting opinion. OPINION MOORE, Circuit Judge. This case involves Defendant-Appellant Randy Graham’s direct appeal from his criminal conviction for conspiracy to commit offenses against the United States and several weapons possession and drug-related counts by a jury in the Western District of Michigan. Graham was a member of a local militia organization which was planning to attack government targets on an unspecified future date. Graham also grew and sold marijuana, part of the proceeds of which he used to help pay for weapons acquisitions related to his militia activity. Graham was sentenced by the district court to 660 months or 55 years in prison. He challenges on appeal his conviction and his sentence. For the following reasons, we AFFIRM the district court’s denial of Graham’s two motions to suppress evidence; the district court’s denial of his motion to sever counts; the district court’s application of § 3A1.4 of the United States Sentencing Guidelines Manual (“U.S.S.G.”) in determining Graham’s sentence; and the district court’s consecutive sentencing on two convictions under 18 U.S.C. § 924(c)(1); and we VACATE the district court’s application of the statutory sentencing range for a quantity of marijuana not found by a jury beyond a reasonable doubt, and REMAND for resentencing. I. BACKGROUND A. Graham’s Drug Activity Randy Graham, who is now 45 years old, lived in Battle Creek, Michigan, where he completed high school and thereafter had intermittent employment. In 1977, he joined the United States Army. He was discharged from the Army in 1978 and returned to Michigan where he held various jobs. At trial, William Huggett, a close friend of Graham’s, testified that Graham was a regular user of marijuana. According to Huggett, he and Graham began to sell marijuana in 1988. At that time, Graham and Huggett would also raid other people’s marijuana patches. In 1989, Huggett testified that they began to grow their own marijuana. Working with Huggett, Graham planted marijuana plants indoors in Huggett’s home; later, they moved their operation outdoors to nearby swamps. In 1994, their best year, they harvested forty pounds of marijuana, although Huggett stated that many years they harvested much less. Local police seized Huggett’s and Graham’s marijuana plants and various weapons, which were stored on Huggett’s uncle’s property, in February 1995. In early 1996, Huggett and Graham purchased a trailer in which to grow marijuana; it was set up next to the trailer in which Graham lived. Huggett testified that they harvested 23 or 24 pounds of marijuana in 1996. In 1997, Huggett and Graham planted seven plots of marijuana plants in nearby swamps. In the summer or fall of 1997, the Southwest Drug Enforcement Team, a drug interdiction group, seized six of the seven patches of marijuana plants. Hug-gett testified that, in 1996 and 1997, Graham would sometimes carry with him a firearm while they were tending their marijuana patches. Huggett also testified that Graham used the money from his drug activities to purchase weapons and for living expenses. B. Graham’s Militia Activity Graham and Huggett were members of a militia group called the Michigan Militia Wolverines in the early years of their marijuana cultivation business. Huggett testified that, at some point after 1995, Graham and others were expelled from the Wolverines because they were advocating violence against the government. In the summer of 1996, those individuals who had left the Wolverines formed a new militia group called the “North American Militia” (“NAM”). The purpose of the militia group was to prepare for a “war” with the government and ultimately to overthrow the government. NAM members advocated an offensive “first strike” against the government, out of fear that the government was planning an attack against them. The war was sometimes referred to as an “Armageddon.” J.A. at 1135. The commanding officer of the militia was “Colonel” Ken Carter, who had organized the group. J.A. at 1133. Bradford Metcalf was Carter’s second-in-command. Graham was not considered a leader, but was an active member of NAM. From the summer of 1996 through March 1998, NAM members met at least twice a month at Speed’s Koffee Shop in Urbandale, Michigan or at a mall in Kalamazoo. There, members would discuss coordination with other militia groups and political events as well as coordinate training exercises and plan their attacks. Various dates for attack were selected, beginning with June 7, 1997, although each date was subsequently postponed by Carter. Undercover Bureau of Alcohol, Tobacco, and Firearms (“ATF”) Agent Robert Stumpenhaus infiltrated NAM sometime in April 1997. Agent Stumpenhaus testified at trial that he participated in over ten meetings at Speed’s and at the mall with various members of NAM. Stumpenhaus and other witnesses who testified at trial reported that among their activities, NAM collected and stockpiled weapons; held target practice and conducted paramilitary training; selected various federal and state “hard” and “soft” targets; and plotted strategy for their war. Stumpenhaus reported that Carter’s strategy was to attack certain targets in Calhoun County, Michigan, and the surrounding area, create chaos, and then attempt to “hold on” for three to five days while militias in other parts of the country would rise up against the government. J.A. at 1063-64. In preparation for their war, NAM members participated in training activities, such as going on “bivouacs;” learning “close quarters battle;” and securing a building with weapons and emptying the building of people and weapons. J.A. at 1166. Under Carter’s direction, each member of the militia was assigned to a three-person “cell” which was responsible for “taking out” various “hard” and “soft” targets in a certain geographical region. Among the “hard” targets selected for attack were: (1) the intersection of Interstate 94 and U.S. Route 131 near Kalamazoo, Michigan; (2) power facilities; (3) fuel depots and gas stations; and (4) communication facilities such as a TV station in Kalamazoo, Michigan. Also mentioned as a site for attack was the nearby Fort Custer Army National Guard Post. NAM’s goal was to cut off transportation, electricity, gas, and communication to the area. Among the “soft” targets identified were federal prosecutors, judges, and other federal officials as well as Senator Carl Levin of Michigan and other members of Congress. Carter also established a method of communication among NAM members that involved beeper messages and a telephone tree; certain beeper codes were to alert members to be ready to start battle. According to one witness, NAM members’ preferred weapon was a semi-automatic rifle, but members also discussed their possession of machineguns and homemade bombs. Testimony also established that NAM members discussed using a variety of attack methods and devices, including chemical warfare, bombs, grenades, and land mines. Graham’s involvement in these activities included attending meetings, participating in training exercises, recruiting members, and purchasing weapons with money derived from his marijuana sales. Notably, Graham was the leader of one of the three-person cells and he “reconned” his assigned region, meaning he visited his assigned attack area and surveyed his targets. J.A. at 1082. At one meeting, on June 17, 1997, he drew a map of Stumpen-haus’s assigned region, marked targets for him to attack including four electrical targets, a V.A. hospital, a gas station, Fort Custer, and a television station, and told him he would help him to “reconn” the area. J.A. at 1086. He also made numerous statements indicating that he was ready to attack his assigned targets; that he possessed a wide variety of weaponry; and that he was prepared to kill federal agents and police officers. C. Government Investigation From July 3, 1997 to August 30, 1997, government agents conducted a wiretap on Carter’s telephone. The government recorded numerous statements by Graham which indicated his possession of significant weaponry and firepower and his willingness to use it on federal agents and police officers. On August 13, 1997, federal agents executed a search warrant at Metcalfs property, which was NAM’s training site. One witness described Metcalfs home as “a miniature military compound.” J.A. at 1150. There, agents discovered that Metcalfs property, approximately 40 acres, had been fortified with bunkers and foxholes and that he had set up a firing range. From his home they seized machineguns; loaded semi-automatic assault rifles and thousands of rounds of ammunition; assault rifles; thirty pounds of smokeless gun powder; silencers; several feet of time fuse; four grenade hulls and a live grenade fuse; flare and tear gas launchers; and military combat equipment including flak vests, helmets, and gas masks. They also seized books and manuals on how to make automatic weapons, construct bombs, and make silencers. Subsequent to this seizure, members of NAM continued to meet regularly at Speed’s and at the mall through March 1998. Pursuant to a forty-page affidavit sworn to by an ATF agent, a magistrate judge authorized an arrest warrant for Graham and a search warrant of Graham’s trailer home on March 17, 1998. On March 18, 1998, federal agents from the FBI and ATF conducted a search of Graham’s trailer home. The agents seized the following from his home: tins containing marijuana seeds and marijuana paraphernalia; plastic containers of marijuana; 32 marijuana seedling plants; a pistol; a Ruger .22-caliber rifle; a semiautomatic assault rifle; a sniper rifle; an ammunition carrier; a magazine and clips; and several videotapes, books, and articles relating to ammunition, combat, and survival. While this search was occurring, agents performed a warrantless search of Graham’s pickup truck from which they seized the following: a semiautomatic rifle, a Beretta pistol, a bag of marijuana, and several cans of ammunition. Graham was arrested during the search and taken into custody by the agents. D. Criminal Proceedings On March 20, 1998, Graham was named in a criminal complaint alleging that he had conspired to manufacture marijuana in violation of 21 U.S.C. §§ 841(a)(1) and 846. Graham and two co-conspirators, Carter and Metcalf, were then named in a twelve-count indictment on April 9, 1998. A grand jury returned a fourteen-count superseding indictment against Graham and Metcalf on July 9, 1998. The superseding indictment alleged that Graham was a member of the North American Militia group and that he conspired from the summer of 1996 through March 1998 with Carter and Metcalf to “possess machineguns, to plan and discuss attacks upon various federal facilities and instrumentalities of interstate commerce and to threaten to assault and murder federal officers and employees.” J.A. at 76. In Count 1, Graham was charged with conspiracy to commit offenses against the United States, in violation of 18 U.S.C. § 371. The indictment alleged that Graham willfully and knowingly conspired to: possess machineguns, in violation of 18 U.S.C. § 922(o)(l); threaten to assault and murder federal officers, as designated in 18 U.S.C. § 1114, with the intent- to impede, intimidate, and interfere with these officers while engaged in the performance of official duties, in violation of 18 U.S.C. § 115(a)(1)(B); forcibly assault, resist, oppose, impede, intimidate, and interfere with federal officers when they were engaged in the performance of their official duties, in violation of 18 U.S.C. § 111; and maliciously damage and destroy and attempt to damage and destroy by means of an explosive any building, vehicle, or other real or personal property used in interstate commerce, in violation of 18 U.S.C. § 844®. Other counts alleged that Graham: knowingly possessed a Browning-type .30-caliber machinegun in violation of 18 U.S.C. § 922(o)(l) (Counts 3 and 4); knowingly possessed a Browning-type .50-cali-ber machinegun (Count 5); knowingly possessed firearms as an unlawful user of marijuana, in violation of 18 U.S.C. § 922(g)(3) (Count 9); knowingly, willfully, and unlawfully attempted to manufacture marijuana, in violation of 21 U.S.C. §§ 841(a)(1) and 846 (Count 10); knowingly, willfully, and unlawfully conspired to manufacture marijuana, in violation of 21 U.S.C. §§ 841(a)(1) and 846 (Count 11); knowingly used and carried a semiautomatic assault weapon during and in relation to a crime of violence as charged in Count 1, in violation of 18 U.S.C. § 924(c)(1) (Count 13); and knowingly used and carried a firearm during and in relation to a drug trafficking crime as charged in Counts 10 and 11, in violation of 18 U.S.C. § 924(c)(1) (Count 14). Prior to trial, Graham filed several motions in the district court. First, he sought to suppress the evidence taken from his trailer home. He asserted that the affidavit on which the magistrate judge relied when issuing the search warrant did not establish probable cause to believe that criminal activity was occurring in Graham’s trailer home. Graham also moved to suppress the evidence seized from his truck during the warrantless search. The district court denied both motions. The district court did, however, grant Graham’s motion to sever defendants, although it denied his motion to sever the drug-related counts, Counts 10, 11, and 14, from the firearm counts. Thus, Graham proceeded to trial alone, but on all counts against him. Following a jury trial, Graham was found guilty of Counts 1, 9, 10, 11, 13 and 14. He was acquitted of Counts 3, 4, and 5. A Presentence Report was then prepared by the probation office. Graham made several objections to the Presen-tence Report. At the sentencing hearing, held on January 13, 1999, the district court rejected all of Graham’s objections and adopted the factual findings and Sentencing Guidelines application in the report. As recommended in the Presentence Report, the district court applied U.S.S.G. § 3A1 .4 to Graham’s sentence for promoting terrorism. The application of this provision increased Graham’s criminal history category from level I to level VI. His total offense level was calculated to be 41. Because the district court imposed consecutive sentences for the firearms convictions under 18 U.S.C. § 924(c)(1), Graham was sentenced to 660 months or 55 years in prison. He timely appeals from his conviction and sentence. II. ANALYSIS A. Motion to Suppress Evidence from Trailer Home 1. Lack of Probable Cause In his first assignment of error, Graham challenges the district court’s denial of his motion to suppress evidence seized from his trailer home. That evidence included various firearms, ammunition, firearms parts, marijuana plants, and marijuana seeds. Graham asserts that the affidavit on which the magistrate relied to issue the search warrant was insufficient to establish probable cause that instrumentalities or evidence of a crime would be found in Graham’s trailer home. First, Graham asserts that “words alone do no[t] constitute a crime.” Appellant’s Br. at 24. Second, he argues that the affidavit does not point to any criminal activity associated with the trailer home. Third, he argues that nothing in the affidavit supported the conclusion that illegal weapons or other evidence of a crime could be found in the trailer. Id. According to Graham, because the affidavit was insufficient, all fruits of the search of the trailer home should have been suppressed. The government counters that the district court properly denied Graham’s motion to suppress because the affidavit elaborated upon the criminal activity which was associated with Graham’s trailer and thereby established probable cause for the search. The government asserts that the affidavit described Graham’s criminal activity in detail — including his participation in meetings at which targets for attack were selected, his surveillance of targets, and his threats to take action, as well as his plans to carry out those threats — and that this information, coupled with the fact that firearms are durable and were likely stored at Graham’s home given the continuing nature of the conspiracy, established probable cause to search Graham’s home for weapons. The district court, in denying Graham’s motion, reviewed the relevant case law and then explained that the fruits of the search would be suppressed only if there was not a fair probability that evidence of a crime would be found at the place to be searched and that the officers acted unreasonably in relying on the affidavit. Citing numerous particular assertions in the affidavit, the district court concluded that the detailed evidence was sufficient to establish probable cause to search for weapons. According to the district court, “[a]lthough the information was somewhat dated by March of 1998, given that firearms and ammunition are durable and useful items, that the crime was a long-term conspiracy and that Graham was likely to have kept firearms, given his paranoia toward the government and his other statements, there was still a fair probability as of March 17, 1998,” that federal agents would find firearms and ammunition at Graham’s home, which were evidence of Graham’s participation in the illegal conspiracy. J.A. at 731. When reviewing a district court’s denial of a motion to suppress, we review the district court’s findings of fact for clear error and its conclusions of law de novo. United States v. Brown, 147 F.3d 477, 484 (6th Cir.1998). We consider the evidence that the issuing magistrate had before him only to ensure that the magistrate had a substantial basis for concluding that probable cause existed. See United States v. Jones, 159 F.3d 969, 973 (6th Cir.1998) (citing Illinois v. Gates, 462 U.S. 213, 238-39, 103 S.Ct. 2317, 76 L.Ed.2d 527 (1983)). We defer to findings of probable cause made by a magistrate, and we will not set aside such a finding unless it was arbitrarily made. Brown, 147 F.3d at 484. In Illinois v. Gates, the Supreme Court established the “totality of the circumstances” test for evaluating whether a magistrate properly determined there was probable cause when issuing a search warrant. Gates, 462 U.S. at 230, 103 S.Ct. 2317. Under this test, probable cause is to be given a “practical, nontechnical conception.” Id. at 231, 103 S.Ct. 2317 (quoting Brinegar v. United States, 338 U.S. 160, 176, 69 S.Ct. 1302, 93 L.Ed. 1879 (1949)). “The task of the issuing magistrate is simply to make a practical, common-sense decision whether, given all the circumstances set forth in the affidavit before him, including the ‘veracity’ and ‘basis of knowledge’ of persons supplying hearsay information, there is a fair probability that contraband or evidence of a crime will be found in a particular place.” Id. at 238, 103 S.Ct. 2317. The issuing magistrate need only have had a substantial basis for concluding that probable cause existed. Id. at 238-39, 103 S.Ct. 2317. Moreover, a finding of “probable cause requires only a probability or substantial chance of criminal activity, not an actual showing of such activity.” Id. at 243-44 n. 13,103 S.Ct. 2317. In this case, ATF Special Agent Mark Semear authored a forty-page affidavit detailing the activities of militia members and explaining why there was probable cause to believe that objects named in the affidavit could be found at Graham’s residence. The affidavit named as items to be seized: (1) firearms, ammunition, and any explosive materials or destructive devices; (2) evidence of ownership of these weapons; (3) computer hardware or software that may be instrumentalities or evidence of crime; and (4) videotapes, books, magazines, articles, and other material that relate to the making and use of firearms, explosives, paramilitary tactics and training, or the associations among NAM members. According to the affidavit, evidence seized would demonstrate that Graham was a part of one or more conspiracies to construct and use explosive devices to destroy interstate highways and various federal buildings; and to kill federal agents, police officers, federal judges, federal informants, and their family members. J.A. at 142-43 (Affidavit ¶ 9). The affidavit also alleged that evidence seized would prove that Graham possessed illegal firearms while being an unlawful user of controlled substances. Id. For his information, Semear stated that he relied on statements provided by the FBI, agents from the ATF, conversations with detectives from the Michigan State Police, confidential sources, and on his own experience and background, which he detailed, as an ATF officer. A confidential informant (“Cl”), whose identity was protected because the investigation was ongoing, offered first-hand descriptions of NAM’s plans and activities which indicated he was privy to regular meetings with NAM members. The affidavit averred that all of the Cl’s evidence had proved reliable and had been corroborated by ATF agents. The affidavit also noted that as of April 17, 1997, an undercover ATF agent had infiltrated NAM and was providing information to government investigators. The affidavit provided an extensive ro-admap of NAM’s activities. Broadly stated, these activities involved the selection of federal and state targets for attack, including television and radio stations, power stations and gas fines, and railroads and highways; participation in training for warfare; development of attack plans and target dates of attack; and the acquisition and use of a wide of variety of weapons. The undercover ATF agent described Carter as having set a target date for the offensive against the government for as early as June 7, 1997. J.A. at 152 (Affidavit ¶ 31). At one meeting, Carter outlined his plans in detail, stating that his plan was to attack the predetermined targets and create chaos for three to four days as sniper units assassinated important people and other “cells” of militia members contained a nearby army base, Fort Custer, blew up railroad yards, a federal building, and shut down radio stations. J.A. at 152 (Affidavit ¶ 32). Graham was present at several of the meetings attended by the ATF agent. J.A. at 150 (Affidavit ¶¶ 28, 36). It is clear that the affidavit relied upon by the magistrate judge in this case more than meets the Supreme Court’s standard for probable cause. A practical, common-sense reading of this affidavit based on the totality of the circumstances, including the veracity and bases of knowledge of the people supplying information, clearly compels the conclusion that there was a fair probability that illegal weapons or other evidence of a crime would be found at Graham’s home. As to the affi-ant’s basis of knowledge, every source who supplied information to the affiant, including sources of hearsay, such as the confidential informant and the undercover ATF agent, as well as direct evidence, such as the wiretapped recordings of telephone conversations between Carter and Graham, corroborated and supported one another. These sources established the probability that Graham was directly implicated in the militia group’s conspiracies; that he was actively participating in the planning of NAM’s offensive; and that he possessed certain weapons. Although Graham contends that there was no evidence that any criminal conduct was associated with his home, and that the government could have done more investigation to establish probable cause, we first note that the government need not provide “an actual showing of’ criminal activity to establish probable cause. Gates, 462 U.S. at 243-44 n. 13, 103 S.Ct. 2317. As we stated previously, probable cause means only that there was a substantial chance, not an absolute certainty, of finding contraband or evidence of criminal activity at the place to be searched. Moreover, the Supreme Court has explained that seemingly innocent activity will frequently provide the basis for probable cause. Id. Notwithstanding the fact that the government did not need to demonstrate conclusively that evidence of a crime would be found at Graham’s home, we reject Graham’s argument that there was no evidence linking criminal activity with his residence. We have emphasized that the issuing magistrate is “entitled to draw reasonable inferences about where evidence is likely to be kept, based on the nature of the evidence and the type of offense.” United States v. Caicedo, 85 F.3d 1184, 1192 (6th Cir.1996) (quoting United States v. Lawson, 999 F.2d 985, 987 (6th Cir.1993)). In this case, there was ample evidence in the affidavit to allow the magistrate judge to draw a reasonable inference, based on the durable nature of firearms and the ongoing nature of the alleged conspiracy, that evidence of the crime would be found at Graham’s home. The affidavit reported that Graham discussed killing people and “hitting” targets, creating the inference that he possessed the weapons that would enable him to carry out those objectives. For example, at a meeting at Carter’s residence on August 15, 1997, Carter told the undercover ATF agent that Graham had been part of a “recovery team” that was to attack federal law enforcement agents and rescue NAM member Metcalf should he have been arrested when his property was searched. J.A. at 154-55 (Affidavit ¶ 39). Excerpts of taped conversations between Graham and Carter reveal Graham’s willingness to shoot police officers and their families, J.A. at 158-59 (Affidavit ¶ 52-53); they implicate Graham in the plans to destroy power lines; and they reveal that he had a semiautomatic weapon ready should any federal agents come to his door, J.A. at 161 (Affidavit ¶ 58). According to the affiant’s sources, Graham also confirmed possession of certain weapons. For example, on June 10, 1997, Graham informed the undercover agent that he owned a rifle and stored other firearms and ammunition at his home. J.A. at 156 (Affidavit ¶ 43). On July 27, 1997, Graham was seen with a rifle. J.A. at 157 (Affidavit ¶ 47). The affidavit also detailed specific facts relating to the possession of machineguns. The Cl observed a machinegun and ammunition at Metcalfs home on June 7, 1997, J.A. at 155 (Affidavit ¶41) and again on June 14, 1997, J.A. at 156 (Affidavit ¶ 44). On July 14, 1997, Graham informed the undercover agent that Metcalf had injured himself with a .50-caliber machinegun at his home while test-firing it. J.A. at 157 (Affidavit ¶ 46). While Graham was not seen with a machinegun, the facts alleged in the affidavit created the inference that he, like Metcalf, possessed such a weapon. The search at Metcalfs property on August 13, 1997, which yielded a large cache of both legal and illegal weapons, contributed to the inference that Graham would possess such weapons. At Metcalfs home, agents discovered “all manner of firearms, to include handguns, machineguns, silencers, shotguns, rifles, military-type semiautomatic assault weapons that could be converted to fire as automatic weapons, parts to firearms that could be used to convert otherwise lawful weapons to unlawful weapons, grenade shells that could be used to contain explosives, and black gunpowder and other chemicals and stockpiles of ammunition.” J.A. at 164-65 (Affidavit ¶ 68). Finally, Agent Semear had stated that, based on his experience and training, it was common for those who unlawfully possess firearms to maintain such firearms and records in secure locations within- their residence. He also asserted that, based on his experience, he knew that “survivalists, radical militia members, and domestic terrorists tend to hold onto their firearms for long periods of time — often as long as ten or twenty years.” J.A. at 176. This information, when considered with the other facts alleged in the affidavit, was more than sufficient to create a fair probability in the mind of the magistrate judge that a search of Graham’s property would uncover the evidence of criminal conduct. Although Graham claims that the affidavit could have better established whether the government had evidence that he possessed a machinegun, silencer, or other illegal destructive devices by providing, for example, first-hand observations by the undercover ATF agent, we have stated that “[tjhere is no requirement of prior, actual observation of all the items listed in a search warrant.” Jones, 159 F.3d at 974. Moreover, the search warrant was not specifically limited to these illegal weapons but was aimed at all firearms, ammunition, or destructive devices. Finally, we note that because NAM’s training activities took place on Metcalfs property, the undercover ATF agent clearly had better access to Metcalfs home than to Graham’s. The undercover agent was not required also to gain access to Graham’s home to establish probable cause that Graham, like Metcalf, possessed illegal weapons or weapons which were evidence of Graham’s participation in the conspiracy. Graham argues that there was only a “possibility,” not a “probability,” that he was engaged in criminal conduct. The overwhelming weight of the information in the affidavit easily provided the magistrate judge with a basis for finding there was a fair probability that contraband or evidence of a crime would be found at Graham’s trailer home. The magistrate judge did not arbitrarily make a finding of probable cause, and the district court’s order was therefore not in error. 2. Failure to Provide a Franks Hearing Graham also argues that the affidavit was insufficient to establish probable cause because it contained allegedly misleading statements and material omissions. According to Graham, paragraphs 42 and 43 of the affidavit affirmatively misled the magistrate judge. Paragraph 42 states that on June 10, 1997, the affiant contacted the National Firearms Registration and Transfer Record and found no firearms registered to Graham. It is followed by paragraph 43, which states that also on June 10,1997, Graham told the undercover ATF agent that he owned a rifle and kept numerous firearms and ammunition at his home. J.A. at 156. Graham alleges that the inclusion and proximity of these paragraphs led the issuing magistrate to believe that Graham illegally possessed weapons which had not been properly registered, when, in fact, Graham was in legal possession of his weapons and was not required to register any of them. In addition to misleading statements, Graham argues that the affidavit contained several material omissions which were arguably exculpatory and would have “negated” probable cause had they been included in the affidavit. The allegedly material omissions reveal not only that NAM members were interested in attacking federal targets and agents but also that they held peaceful protests and demonstrations. One statement also suggests that Graham exaggerated his urge to kill federal officers and destroy federal buildings. Graham sought but was denied an evi-dentiary hearing before the district court under Franks v. Delaware, 438 U.S. 154, 98 S.Ct. 2674, 57 L.Ed.2d 667 (1978), to assess the validity of the search warrant given these alleged misstatements and omissions. The district court noted that the statements at issue in paragraphs 42 and 43 were not false, and that the omitted statements occurred after Graham had confessed that he believed his phone had been tapped. The district court then determined that, even if the omitted material had been included, the magistrate judge would still have had probable cause to issue the search warrant. We review the district court’s denial of a Franks hearing under the same standard as for the denial of a motion to suppress: the district court’s factual findings are reviewed for clear error and its conclusions of law are reviewed de novo. United States v. Hill, 142 F.3d 305, 310 (6th Cir.1998). A defendant is entitled to a hearing to challenge the validity of a search warrant if he “makes a substantial preliminary showing that a false statement knowingly and intentionally, or with reckless disregard for the truth, was included by the affiant in the warrant affidavit, and [ ] the allegedly false statement is necessary to the finding of probable cause.” Franks v. Delaware, 438 U.S. 154, 155-56, 98 S.Ct. 2674, 57 L.Ed.2d 667 (1978). If, at the evidentiary hearing, “the allegation of perjury or reckless disregard is established by the defendant by a preponderance of the evidence, and, with the affidavit’s false material set to one side, the affidavit’s remaining content is insufficient to establish probable cause, the search warrant must be voided and the fruits of the search” suppressed. Id. at 156, 98 S.Ct. 2674. As to the allegedly misleading statements, the government argues that paragraphs 42 and 43 must be read in the context of paragraph 41, which reports that on June 7, 1997, the Cl was at a meeting at Metcalfs home where Metcalf showed the Cl a .50-caliber machinegun as well as ammunition for the gun, and informed the Cl that he intended to mount the weapon, possibly in the back of his pickup truck, to use as an anti-aircraft weapon. J.A. at 155 (Affidavit ¶ 41). Paragraph 42 then logically states that: On June 10, 1997, your affiant contacted the National Firearms Registration and Transfer Record. They conducted a search and found no firearms registered to Bradford Metcalf. In a subsequent search, the National Firearms Registration and Transfer Record also found no firearms registered to Ken Carter or RANDY GRAHAM. J.A. at 156 (Affidavit ¶ 42). Paragraph 43 then states: Also, on June 10, 1997, the ATF undercover agent met with RANDY GRAHAM at the East Towne Mall in Kalamazoo, Michigan. During this meeting GRAHAM told the ATF Special Agent that he not only owned a rifle but had numerous firearms and ammunition stored in his residence. J.A. at 156 (Affidavit ¶ 43). Because paragraphs 42 and 43 are neither false nor misleading, the government contends that no Franks hearing was warranted. We believe that even if Graham could make a substantial showing that Agent Semear recklessly or deliberately made false statements' — which he cannot because paragraphs 42 and 43 were, in fact, truthful — Graham cannot meet the second prong of the Franks test because the affidavit contains sufficient probable cause even when the allegedly false statements are set aside. While the proximity of paragraphs 42 and 43 could have created the false impression that not only Met-calf but also Graham possessed weapons which were not properly registered, the affidavit clearly provided a sufficient basis for the magistrate judge to find a fair probability that criminal activity or contraband could be found at Graham’s trailer home even without those statements. Removing paragraphs 42 and 43 would not have affected the sufficiency of the affidavit. As to the allegedly material omissions, we have held that omissions “are not immune from inquiry under Franks, [but] we have recognized that an affidavit which omits potentially exculpatory information is less likely to present a question of impermissible official conduct than one which affirmatively includes false information.” United States v. Atkin, 107 F.3d 1213, 1217 (6th Cir.1997). Indeed, a Franks hearing is only merited in cases of omissions in “rare instances.” Mays v. City of Dayton, 134 F.3d 809, 815 (6th Cir.), cert. denied, 524 U.S. 942, 118 S.Ct. 2352, 141 L.Ed.2d 722 (1998). “This is so because an allegation of omission potentially opens officers to endless conjecture about investigative leads, fragments of information, or other matter that might, if included, have redounded to defendant’s benefit.” Atkin, 107 F.3d at 1217 (internal quotation omitted). To merit a hearing, the defendant must make a preliminary showing that the affiant engaged in deliberate or reckless disregard of the truth in omitting the information from the affidavit. The court must then consider the affidavit along with the omitted portions and determine whether probable cause still exists. Id. The affidavit here allegedly omitted certain statements made by Graham relating to the militia’s political activity, such as protesting and demonstrating in front of a courthouse or a federal building, as well as the following two statements, the first from July 3, 1997 and the second from August 25,1997: That’s the way I look at it right now, it’s all mind warfare. You can’t shoot — you can go down to the courthouse and protest. [W]hy would I blow up my property? I don’t want to see innocent people die, and I’m sticking up for my freedom, my rights, and my friends’ rights. Appellant’s Br. at 29. We hold that the district court did not err in concluding that these omissions did not merit a Franks hearing. Even assuming Graham could such show that these omissions were made in reckless disregard for the truth, the affidavit along with the omitted portions of testimony would still amply establish probable cause to believe that evidence of criminal activity or contraband was contained in Graham’s home. Viewing this evidence in its totality, including the fact that several of the statements were uttered after Graham had knowledge that he was a target of the government’s investigation and that his phones were tapped, the magistrate judge could easily have concluded that, despite NAM members’ legitimate activities, there was probable cause to believe that NAM members were engaged in illegal activity as well. Indeed, both types of activity were consistent with NAM’s guiding principles. The allegedly exculpatory statements do not “outweigh” the inculpatory ones, such as an intercepted telephone conversation between Graham and Carter on July 9, 1997, in which Graham stated, “If anybody wants to kick a door we go ... shoot first and ask questions later.... I’m waiting for judgment day because they are all targets to me ... every fucking one of them,” J.A. at 159 (Affidavit ¶ 53). Therefore, the district court did not err by refusing to grant Graham a Franks hearing, and the denial of Graham’s motion to suppress is AFFIRMED. B. Motion to Suppress Evidence from Truck In his second assignment of error, Graham contends the district court erred by denying his motion to suppress the items seized during the warrantless search of his pickup truck. On March 18, 1998, when the government searched Graham’s trailer home, federal agents also searched Graham’s truck and seized an AR-15 rifle, a Beretta pistol, a bag of marijuana, and several cans of ammunition. Graham argues that the search was improper because there was no authorizing warrant, he refused to consent to the search, the officers did not have probable cause for the search, and no exception to the warrant requirement applied. At the suppression hearing held before the district court, Agent David Smith (“Smith”) testified that he was part of the team that conducted the search of Graham’s trailer home. Smith had participated in monitoring the wiretapped conversations between Graham and Carter and, in preparation for the search, Smith testified that he had read the forty-page affidavit in support of the search of the house. Smith stated that on March 18, 1998, Graham was arrested by federal agents in his pickup truck as he was pulling into his trailer park. Smith, who arrived after Graham’s arrest, explained that during his search of the trailer home, he found several weapons and boxes of ammunition in Graham’s bedroom. The agent noted that, in the course of his search, he found ammunition boxes for an SKS rifle and an AR-15 rifle in a closet in Graham’s bedroom; he stated that he also found parts for an AR-15 or an M16 in a gun cabinet in the closet, as well as on a nearby shelf. Agent Smith testified that he did not find corresponding weapons for those boxes of ammunition or parts. The agent also described how he found several of Graham’s “bug-out” lists of things to take with him in case he had to exit his trailer quickly, and one of the weapons mentioned on the list was an AR-15 rifle. At this point, the agent testified, he believed that Graham owned an AR-15 or an M16. The agent then testified that he found a manufacturer’s box and ammunition for a Beretta-92 pistol in the gun cabinet in the bedroom closet, but could not find the corresponding handgun. The agent stated that he then checked with other searching officers, and none had been able to locate an AR 15, an M16, or a Beretta in Graham’s trailer. According to Agent Smith, he then asked Graham to consent to a search of a shed on his property and his truck; Graham consented to the search of the shed but refused to consent to a search of his pickup truck. Graham then gave Smith a ring of his keys and asked Smith to give the keys to a neighbor. The agent stated that he recognized the name of the neighbor as someone who was sympathetic to NAM. Smith took the keys and decided to search the truck for the missing weapons because, based on his knowledge of Graham’s participation in the militia group’s plans for attack, he believed that Graham was likely to keep weapons in his truck. Agent Smith also stated that he feared the neighbor or another resident of the trailer park sympathetic to the militia group would get access to weapons in the truck. With another agent, Smith then searched the truck and recovered ammunition and marijuana from the cab of the truck, and an AR-15, a Beretta pistol, and ammunition in the covered bed of the truck. The district court determined as a matter of law that the truck search was proper despite the lack of a warrant because the searching agent had probable cause to believe he would find evidence of a crime in the vehicle. The district court found that the agent had probable cause based on the following facts: the agent had read the search warrant affidavit; he had listened to the wiretap between Graham and Carter; he had found evidence in the trailer home of Graham’s possession of certain weapons but was unable to locate those weapons; he had also found other weapons in the trailer home as he had expected pursuant to the warrant; and he believed that the neighbor to whom Graham wanted to give the his keys was a militia sympathizer. Based on this finding, the district court denied Graham’s motion to suppress the weapons recovered from his truck. Graham argues to this court that because warrantless searches are presumptively illegal, the government must prove by a preponderance of the evidence that it searched pursuant to an exception to the warrant requirement. Graham then asserts that no exception to the warrant requirement applies to this case. Attempting to distinguish California v. Carney, 471 U.S. 386, 105 S.Ct. 2066, 85 L.Ed.2d 406 (1985), and United States v. Kincaide, 145 F.3d 771 (6th Cir.1998), two cases relied upon by the district court at the suppression hearing, Graham contends that Coolidge v. New Hampshire, 403 U.S. 443, 91 S.Ct. 2022, 29 L.Ed.2d 564 (1971), is the persuasive authority on point in this case. According to Graham, Coolidge is controlling because, in that case, the Supreme Court invalidated a warrantless search of a car where “the vehicle was parked, the defendant had already been removed and taken into custody, and it was not likely that the vehicle would be driven away.” Appellant’s Br. at 37. In this case, Graham argues, he had been removed from his truck before it was searched, the keys were not in his possession and thus the truck was not capable of movement, and the agents could have watched over the truck while they obtained a warrant. The government counters that Graham’s argument reflects a misreading of current Supreme Court precedent on the automobile exception to the Fourth Amendment’s warrant requirement. According to the government, it need not prove any special “exigency” to justify a warrantless search of an automobile; the police need only have probable cause for the search. For this proposition, the government relies on Maryland v. Dyson, 527 U.S. 465, 119 S.Ct. 2013, 144 L.Ed.2d 442 (1999), in which the Supreme Court explicitly rejected the contention that the police may only conduct a warrantless search of a car if they have probable cause and there is a separate finding of exigency. Because the agents in this case acted upon probable cause, the government contends, the search was proper and the district court’s judgment should be upheld. When reviewing a district court’s denial of a suppression motion, we review the district court’s factual findings for clear error and its legal conclusions, including its findings of probable cause, de novo. United States v. Kincaide, 145 F.3d 771, 779 (6th Cir.1998). The preferable method for searching a person’s private property is for the government to obtain a warrant. United States v. Akram, 165 F.3d 452, 456 (6th Cir.1999). Where a law enforcement agent has no warrant to search an automobile, he may still conduct a search pursuant to the “automobile exception” if he has probable cause to believe that instrumentalities or evidence of crime may be found in the vehicle to be searched. United States v. Lumpkin, 159 F.3d 983, 986 (6th Cir.1998). We have defined probable cause as “reasonable grounds for belief, supported by less than prima facie proof but more than mere suspicion.” Bennett, 905 F.2d at 934. The government is correct that Graham’s reliance on Coolidge is misplaced, in light of more recent developments in the Supreme Court’s jurisprudence. The automobile exception to the warrant requirement was based initially on a car’s ready mobility and the exigent circumstances created by that mobility: probable cause clearly could develop after a car was sight- ed, in which case the officers might not have the opportunity to obtain a warrant without losing sight of the car; or probable cause could develop prior to sighting the car but officers could believe that the car would escape if not stopped immediately. See Carroll v. United States, 267 U.S. 132, 153, 154-55, 45 S.Ct. 280, 69 L.Ed. 543 (1925). Indeed, language in early Supreme Court cases appeared to require such an exigency in addition to probable cause for a warrantless search of automobile. See Coolidge, 403 U.S. at 478, 91 S.Ct. 2022 (noting that, even where there is probable cause to search an automobile, if “police knew of the presence of the automobile and planned all along to seize it” when they arrested defendant in his home, then “there was no ‘exigent circumstance’ to justify their failure to obtain a warrant” and fruits of search must be suppressed); Chambers v. Maroney, 399 U.S. 42, 50-52, 90 S.Ct. 1975, 26 L.Ed.2d 419 (1970) (holding that, based on automobile’s ready mobility and “fleeting” opportunity to search, where officers have probable cause to search a car when it is initially stopped on the road it may also be searched without a warrant after it has been taken to the police station). Since California v. Carney, 471 U.S. 386, 391-92, 105 S.Ct. 2066, 85 L.Ed.2d 406 (1985), however, when the Supreme Court articulated an additional justification for war-rantless car searches, namely that a car’s occupants have a lesser expectation of privacy in their car than in their home due to our society’s pervasive regulation of automobiles, the necessity of a special exigency has waned. Indeed, most recently the Supreme Court has emphasized that no special exigency is required to conduct a warrantless search of an automobile when the car is mobile and the searching officer has probable cause to believe that fruits of a crime may be present in the automobile. Maryland v. Dyson, 527 U.S. 465, 466, 119 S.Ct. 2013, 144 L.Ed.2d 442 (1999). The government’s reliance on Dyson is, therefore, both appropriate and controlling. More helpful than Dyson for purposes of this case, however, is Pennsylvania v. Labron, 518 U.S. 938, 116 S.Ct. 2485, 135 L.Ed.2d 1031 (1996), Dyson’s precursor, which addresses directly the fact pattern in the instant case. Labron consolidated two Pennsylvania cases for argument. In the second case, Pennsylvania v. Kilgore, No. 95-1738, the Supreme Court approved of a warrantless search of the defendant’s pickup truck which occurred after the defendant’s wife drove the truck to a farmhouse, entered the farmhouse to conduct a drug transaction with the defendant, and was arrested with the defendant as part of a drug sting. The Pennsylvania Supreme Court held the truck search violated the Fourth Amendment because, although there was probable cause for the search, there were no exigent circumstances justifying the failure to obtain a warrant. Reversing, the Supreme Court determined that the truck search was proper because the police had probable cause to believe there were drugs in the truck after having observed the defendant and his wife walking to and from their truck and the farmhouse. The Supreme Court held that “[i]f a car is readily mobile and probable cause exists to believe it contains contraband, the Fourth Amendment thus permits police to search the vehicle without more.” Labron, 518 U.S. at 940,116 S.Ct. 2485. The truck’s “ready mobility” was not questioned, despite the fact that, as in our case, the defendants had been arrested outside of the truck and prior to the truck search. We believe the Supreme Court’s reference to the truck’s “ready mobility” was not, therefore, to demonstrate an “exigent circumstance,” but rather to show that when the place to be searched, such as a truck, is associated with a lesser expectation of privacy than a home, the justification for a warrantless search articulated in Carney is satisfied provided the police have probable cause. Even before Labron, this court had recognized that police may search a car without a warrant subsequent to executing a valid house search when that search has given rise to probable cause to search the car. In United States v. Hofstatter, 8 F.3d 316 (6th Cir.1993), a panel of this court approved an automobile search which occurred after an authorized search of the defendants’ home. The police officers in Hofstatter executed a search warrant on two addresses where the defendants were believed to have gone after picking up ingredients for their drug manufacturing business; the officers then searched one defendant’s car, which had been used the day before in a controlled drug buy and was parked in the driveway of the premises. Incriminating evidence was seized from the car. We upheld the search based only upon the officers’ probable cause, without any discussion of exigent circumstances or the car’s mobility, stating that “[ajlthough the government might have had time to secure a warrant to search the automobile, there was no requirement that it do so.” Hofstatter, 8 F.3d at 322. In this case, the district court did not err by finding that the agents had probable cause to search the truck. The district court relied upon the applicable principle of law, namely that a vehicle may be searched, without any indication of exigency, if the searching officers have probable cause to believe that it contains instrumentalities or evidence of the crime. Moreover, the district court’s findings of fact were not clearly erroneous: all factual findings were directly supported by Agent Smith’s testimony. The district court properly viewed the search of the truck in light of the allegations in the search warrant affidavit and the agents’ search of the trailer home. Graham was suspected of participating in a conspiracy to lead a violent offensive against the government and its agents and officers. Agent Smith, who testified that he had monitored the wiretapped conversations between Graham and Carter and had read the search warrant affidavit the day of the search, knew that Graham was suspected of participating in the conspiracy and that as part of the conspiracy he was amassing weapons and ammunition. In addition to the fact that Agent Smith had been briefed that members of militia organizations collect firearms and that Graham might carry weapons in his truck, the agent found strong evidence in the trailer indicating that an assault rifle and a Beretta pistol were unaccounted for during the search. J.A. at 743-44. The agent’s belief that several weapons were outstanding was reasonable, and there was a fair probability that those weapons would be found in Graham’s truck; therefore, Agent Smith had probable cause to believe that Graham’s truck contained contraband or evidence of a crime. Contrary to Graham’s assertion, the agent did not need to find a magistrate and obtain a search warrant for the truck; the agent’s belief that there was probable cause to search the truck and the truck’s mobility were sufficient to justify the search. Therefore, we AFFIRM the district court’s denial of Graham’s motion to suppress the evidence recovered from the pickup truck. C. Severance of Counts Graham’s third assignment of error is that the district court erred when it failed to grant his motion to sever the drug-related counts, Counts 10, 11, and 14, from the firearm-related counts pursuant to Fed.R.Crim.P. 14. Count 10 alleged that Graham unlawfully attempted to manufacture marijuana; Count 11 alleged that Graham unlawfully conspired to manufacture marijuana; and Count 14 alleged that Graham knowingly used and carried a firearm during and in relation to a drug trafficking crime, namely his attempt and conspiracy to manufacture marijuana as charged in Counts 10 and 11. Graham claims that his attempt or conspiracy to grow marijuana had nothing to do with the conspiracy charged in Count 1 or the other offenses in Counts 3, 4, 5, 9, and 13 because the members of NAM did not finance their activities with the sale of marijuana. Fed.R.Crim.P. 8(a) provides that two or more offenses may be charged in the same indictment: [I]f the offenses charged ... are of the same or similar character or are based on the same act or transaction or on two or more acts or transactions connected together or constituting parts of a common scheme or plan. Fed.R.Crim.P. 8(a). The district court found that, based on the grand jury’s indictment, the conspiracy to manufacture marijuana was part of “a common scheme or plan” to sell drugs to finance violence. Moreover, the district court found that the firearms were related to the drug crimes in that they were allegedly used or carried in connection with the drug crimes. J.A. at 219. Concluding that introduction of the evidence relating to the drug counts would not unduly prejudice Graham, the district court denied Graham’s motion to sever the counts. Joinder of the counts under Rule 8(a) was proper in this case. Relying on the language of the Rule, we have observed that “joinder under this subsection is permissive.” United States v. Wirsing, 719 F.2d 859, 862 (6th Cir.1983). The district court may, to the extent it is consistent with due process principles, construe the Rule broadly to “promote the goals of trial convenience and judicial efficiency.” Id. In this case, the indictment specifically averred that “members [of NAM] planned to finance their organization by engaging in narcotics trafficking.” J.A. at 79 (Superseding Indictment). Moreover, Count 9 of the indictment charged Graham with possession of a firearm while being a user of an illegal substance in violation of 18 U.S.C. § 922(g). The government necessarily had to prove Graham’s marijuana use in order to establish the elements of this charge. We have affirmed that “[w]hen the joined counts are logically related, and there is a large area of overlapping proof, joinder is appropriate.” Wirsing, 719 F.2d at 863 (quotation omitted). In this case, William Huggett, who was Graham’s partner in drug trafficking, testified in great detail about Graham’s history of marijuana use and the growing operation that he ran with Huggett. Huggett’s testimony also established the time frame when he and Graham first became involved in militia activities and the extent of Graham’s participation in NAM, including Graham’s recruitment of members, his discussions of target lists, and his preparation for battle. Moreover, as the government noted, Huggett’s testimony about the government’s seizure of Graham’s marijuana plants in 1997, which helped to prove the drug counts, also established motive for Graham’s distrust of the government, which explained Graham’s participation in the broader conspiracy. Other trial testimony, particularly that of the agents who searched Graham’s residence, established that Graham kept his guns and drugs together. To require the government to put on a separate trial to prove conspiracy to manufacture marijuana, attempt to manufacture marijuana, and knowingly carrying a firearm in relation to a drug trafficking crime, where the evidence for those counts is duplicative of evidence relating to other counts in the indictment, would violate the spirit of Rule 8(a), which is to “promote the goals of trial convenience and judicial economy.” Wirs-ing, 719 F.2d at 862. Therefore, we hold that joinder of the counts was proper under Rule 8(a). We also hold that the district court did not abuse its discretion by refusing to grant Graham a severance under Fed.R.Crim.P. 14. Even when joinder is appropriate under Rule 8(a), a district court may, in its discretion, grant the defendant a severance if it appears that the defendant is prejudiced by the joinder of the offenses. Fed.R.Crim.P. 14. The district court’s discretion, which is due substantial deference from this court, “must be exercised in light of all the relevant circumstances. Foremost among the relevant circumstances is a balancing of the interest of the public in avoiding a multiplicity of litigation and the interest of the defendant in obtaining a fair trial.” Wirsing, 719 F.2d at 864-65. In Wirsing, one of the few cases in which an appellate court ordered severance pursuant to Rule 14, a panel of this court found that while the allegations of a conspiracy to traffic in drugs and tax evasion from the drug money were properly joined under Rule 8(a), the district court should have granted a severance because the defense attorney was unprepared to challenge the complex tax evasion charges. See id. at 865. We concluded that there was a prejudicial “spillover effect” from the tax evasion charges to the drug conspiracy charge due to defense counsel’s unpreparedness, which prejudiced the defendant’s right to a fair trial. Id. In this case, in contrast, Graham cannot point to any specific prejudice he suffered from the joinder of Counts 10, 11, and 14 with the other counts of the indictment. Graham does argue that there was no evidence to connect his marijuana operation with NAM activities. Even if this were so, which the government disputes, the fact that the government was unable to prove a certain aspect of the conspiracy does not prove that Graham suffered “substantial prejudice” from the joinder of the counts. Graham also claims that “when the jury was presented with both guns and drugs, actual prejudice resulted to Mr. Graham in the form of a guilty verdict regarding Count 1 even though no threats were made or any violent action taken.” Appellant’s Br. at 39. Graham’s argument is no more than that the jury was overwhelmed with evidence of Graham’s bad acts and could not distinguish between the conspiracy count and the drug counts. Significantly, however, Graham does not challenge his conviction on Count 1 for sufficiency of the evidence. Claiming that the jury was “overwhelmed” is not evidence of substantial prejudice. Indeed, proof that the jurors were able to distinguish between the drugs and weapons evidence is the fact that they acquitted Graham of Counts 3, 4, and 5. The district court did not abuse its discretion by failing to grant Graham a severance under Rule 14. The drug counts and the firearm counts