Full opinion text
J. SKELLY WRIGHT, Circuit Judge. This case presents an important question concerning the powers and procedures of the Federal Trade Commission. We are asked to determine whether the Commission, under its governing statute, the Trade Commission Act, 15 U.S. C. § 41 et seq. (1970), and specifically 15 U.S.C. § 46(g), is empowered to promulgate substantive rules of business conduct or, as it terms them, “Trade Regulation Rules.” The effect of these rules would be to give greater specificity and clarity to the broad standard of illegality — “unfair methods of competition in commerce, and unfair or deceptive acts or practices in commerce” — which the agency is empowered to prevent. 15 U. S.C. § 45(a). Once promulgated, the rules would be used by the agency in adjudicatory proceedings aimed at producing cease and desist orders against violations of the statutory standard. The central question in such adjudicatory proceedings would be whether the particular defendant’s conduct violated the rule in question. See 16 C.F.R. § 1.-12(c) (1978). The case is here on appeal from a District Court ruling that the Commission lacks authority under its governing statute to issue rules of this sort. National Petroleum Refiners Assn v. FTC, D.D.C., 340 F.Supp. 1343 (1972). Jurisdiction in the District Court was based on Section 10 of the Administrative Procedure Act. 5 U.S.C. § 706(2) (1970). Specifically at issue in the District Court was the Commission’s rule declaring that failure to post octane rating numbers on gasoline pumps at service stations was an unfair method of competition and an unfair or deceptive act or practice. The plaintiffs in the District Court, appellees here, are two trade associations and 34 gasoline refining companies. Plaintiffs attacked the rule on several grounds, but the District Court disposed of the case solely on the question of the Commission’s statutory authority to issue such rules. That is the only question presented for our consideration on appeal. We reverse and remand to the District Court for further consideration of appellees’ challenge to the validity of the procedure before the Commission which resulted in the rule. I Our duty here is not simply to make a.policy judgment as to what mode of procedure — adjudication alone or a mixed system of rule-making and adjudication, as the Commission proposes— best accommodates the need for effective enforcement of the Commission’s mandate with maximum solicitude for the interests of parties whose 'activities might be within the scope of the statutory standard of illegality. The Federal Trade- Commission is a creation of Congress, not a creation of judges’ contemporary notions of what is wise policy. The extent of its powers can be decided only by considering the powers Congress specifically granted it in the light of the statutory language and background. See Textile and Apparel Group v. FTC, 133 U.S.App.D.C. 353, 356-357, 410 F.2d 1052, 1055-1056, cert. denied, 396 U.S. 910, 90 S.Ct. 223, 24 L.Ed.2d 185 (1969). The question to be answered is “not what the [Commission] thinks it should do but what Congress has said it can do.” CAB v. Delta Air Lines, 367 U.S. 316, 322, 81 S.Ct. 1611, 1617, 6 L.Ed. 869 (1961). As always, we must begin with the words of the statute creating the Commission and delineating its powers. Section 5 directs the Commission to “prevent persons, partnerships, or corporations * * * from using unfair methods of competition in commerce and unfair or deceptive acts or practices in commerce.” Section 5(b) of the Trade Commission Act specifies that the Commission is to accomplish this goal by means of issuance of a complaint, a hearing, findings as to the facts, and issuance of a cease and desist order. The Commission’s assertion that it is empowered by Section 6(g) to issue substantive rules defining the statutory standard of illegality in advance of specific adjudications does not in any formal sense circumvent this method of enforcement. For after the rules are issued, their mode of enforcement remains what it has always been under Section 5: the sequence of complaint, hearing, findings, and issuance of a cease and desist order. What rule-making does do, functionally, is to narrow the inquiry conducted in proceedings under Section 5(b). It is the legality of this practice which we must judge. Appellees argue that since Section 5 mentions only adjudication as the means of enforcing the statutory standard, any supplemental means of putting flesh on that standard, such as rule-making, is contrary to the overt legislative design. But Section 5(b) does not use limiting language suggesting that adjudication alone is the only proper means of elaborating the statutory standard. It merely makes clear that a Commission decision, after complaint and hearing, followed by a cease and desist order, is the way to force an offender to halt his illegal activities. Nor are we persuaded by appellees’ argument that, despite the absence of limiting language in Section 5 regarding the role of adjudication in defining the meaning of the statutory standard, we should apply the maxim of statutory construction ex-pressio unius est exclusio alterius and conclude that adjudication is the only means of defining the statutory standard. This maxim is increasingly considered unreliable, see Potomac Passngers Assn v. Chesapeake & Ohio R. Co., 154 U.S.App.D.C. 214, 220-222, 475 F.2d 325, 331-332 (1973), cert. granted, sub nom. Nat’l. R. R. Passenger Corp. v. Nat’l. Assn. of R. R. Passngers, 411 U.S. 981, 93 S.Ct. 2273, 36 L.Ed.2d 957 (1973), for it stands on the faulty premise that all possible alternative or supplemental provisions were necessarily considered and rejected by the legislative draftsmen. See American Trucking Assns v. United States, 344 U.S. 298, 309-310, 73 S.Ct. 307, 97 L.Ed. 337 (1953); Durnin v. Allentown Federal Savings & Loan Assn, E.D.Pa., 218 F.Supp. 716, 719 (1963). Here we have particularly good reason on the face of the statute to reject such arguments. For the Trade Commission Act includes a provision which specifically provides for rule-making by the Commission to implement its adjudicatory functions under Section 5 of the Act. Section 6(g) of the Act, 15 U.S.C. § 46(g), states that the Commission may “[f]rom time to time * * * classify corporations and * * * make rules and regulations for the purpose of carrying out the provisions of sections 41 to 46 and 47 to 58 of this title.” According to appellees, however, this rule-making power is limited to specifying the details of the Commission’s non-adjudicatory, investigative and informative functions spelled out in the other provisions of Section 6 and should not be read to encompass substantive rule-making in implementation of Section 5 adjudications. We disagree for the simple reason that Section 6(g) clearly states that the Commission “may” make rules and regulations for the purpose of carrying out the provisions of Section 5 and it has been so applied. For example, the Commission has issued rules specifying in greater detail than the statute the mode of Commission procedure under Section 5 in matters involving service of process, requirements as to the filing of answers, and other litigation details necessarily involved in the Commission’s work of prosecuting its complaints under Section 5. Such rule-making by the Commission has been upheld. See Hunt Foods & Industries, Inc. v. FTC, 9 Cir., 286 F.2d 803, 810 (1960); United States v. San Juan Lumber Co., D.Colo., 313 F.Supp. 703, 708 (1969). Moreover, the Supreme Court has ruled that the powers specified in Section 6 do not stand isolated from the Commission’s enforcement and law-applying role laid out in Section 5. In United States v. Morton Salt Co., 338 U.S. 632, 70 S.Ct. 357, 94 L.Ed. 401 (1950), the Court unanimously rejected arguments that the powers in the two sections are to be exercised separately. There the Court upheld the Commission’s power to utilize its authority under Section 6(b) to compel the filing of “special reports” to monitor a defendant’s compliance with a cease and desist order issued under Section 5. The Commission sought information in such reports to supplement the reports the defendants had been ordered to file by the Court of Appeals which had affirmed the Commission’s original cease and desist order. Finding the Commission’s request squarely within a commonsense definition of a “special report,” the Court reasoned that the power to compel “special reports” meant that the agency could “elicit any information beyond the ordinary data of a routine annual report.” Id. at 650, 70 S.Ct. at 368. More importantly, the Court rejected arguments that the legislative history compelled an opposite result, pointing out that while the legislative history did not specifically underwrite this function of “special reports,” neither did it explicitly “deny [their] use for any purpose within the duties of the Commission, including a § 5 proceeding.” Id. at 649, 70 S.Ct. at 367. The Court concluded that the Trade Commission Act should be read as an “integrated whole.” Id. at 650, 70 S.Ct. 357. A similarly broad construction was given the Commission’s powers in FTC v. Dean Foods Co., 384 U.S. 597, 86 S.Ct. 1738, 16 L.Ed.2d 802 (1966), where the Commission sought a temporary restraining order and a preliminary injunction against the consummation of a corporate merger against which it was proceeding under Section 5 of the Trade Commission Act and Section 7 of the Clayton Act. The Supreme Court rejected arguments that the Commission lacked the specific authority under its enabling statute to move into court in advance of issuing a cease and desist order and that the Commission, having sought similar powers unsuccessfully from Congress, should not be granted them by judicial implication. Id. at 607-611, 86 S.Ct. 1738. The Court upheld the Commission’s authority to petition Courts of Appeals to exercise their power under the All Writs Act, 28 U.S.C. § 1651(a) (1970), to preserve the status quo in merger cases pending Commission proceedings. Significantly, for our purposes here, the Court reasoned that, while the Commission was acting without specific statutory warrant, “[s]uch ancillary powers have always been treated as essential to the effective discharge of the Commission’s responsibilities.” Id. at 607, 86 S.Ct. at 1744. Of course, it is at least arguable that these cases go no farther than to justify utilizing Section 6(g) to promulgate procedural, as opposed to substantive, rules for administration of the Section 5 adjudication and enforcement powers. But we see no reason to import such a restriction on the “rules and regulations” permitted by Section 6(g). On the contrary, as we shall see, judicial precedents concerning rule-making by other agencies and the background and purpose of the Federal Trade Commission Act lead us liberally to construe the term “rules and regulations.” The substantive rule here unquestionably implements the statutory plan. Section 5 adjudications — trial type proceedings — will still be necessary to obtain cease and desist orders against offenders, but Section 5 enforcement through adjudication will be expedited, simplified, and thus “carried out” by use of this substantive rule. And the overt language of both Section 5 and Section 6, read together, supports its use in Section 5 proceedings. II Our belief that “rules and regulations” in Section 6(g) should be construed to permit the Commission to promulgate binding substantive rules as well as rules of procedure is reinforced by the construction courts have given similar provisions in the authorizing statutes of other administrative agencies. There is, of course, no doubt that the approved practices of agencies with similar statutory provisions is a relevant factor in arriving at a sound interpretation of the Federal Trade Commission’s power here. See FTC v. Dean Foods Co., supra, 384 U.S. at 607, 86 S.Ct. 1738; FPC v. Texaco, Inc., 377 U.S. 33, 39-41, 84 S.Ct. 1105, 12 L.Ed.2d 112 (1964). In National Broadcasting Co. v. United States, 319 U.S. 190, 63 S.Ct. 997, 87 L.Ed. 1344 (1943), for example, the Supreme Court upheld the Federal Communications Commission’s chain broadcasting rules regulating programming arrangements between networks and affiliates, in part on the basis of the FCC’s generalized rule-making authority in 47 U.S.C. § 303(r) (1970). See 319 U.S. at 217, 63 S.Ct. 997. It rejected arguments similar to those made here, ruling that this authority extended beyond specification of technical and financial qualifications to be used as guides in the administration of the Commission’s license-granting power. Id. at 220, 63 S.Ct. 997. It permitted the FCC to use rule-making to elaborate the terms of its mandate to pursue the “public convenience, interest, or necessity,” 47 U.S.C. § 303, by framing rules carrying out public policy objectives like affiliate independence and avoidance of undue network control over programming in the hope that listeners would be ensured a diversity of program offerings. United States v. Storer Broadcasting Co., 351 U.S. 192, 76 S.Ct. 763, 100 L.Ed. 1081 (1956), took the FCC’s rule-making power a step further, holding that applicants for licenses could be rejected before receiving a hearing specified by statute, see 47 U.S.C. § 309(b) (1970), in the event they did not comply with the Commission’s rule limiting networks’ power to own stock in affiliates and did not give sufficient reasons why the rule should be waived. The Court held: “We do not read the hearing requirement, however, as withdrawing from the power of the Commission the rulemaking authority necessary for the orderly conduct of its business. * * * “* # * The Communications Act must be read as a whole and with appreciation of the responsibilities of the body charged with its fair and efficient operation. ? * * ” 351 U.S. at 202-203, 76 S.Ct. at 770. See also WBEN, Inc. v. United States, 2 Cir., 396 F.2d 601, cert. denied, 393 U.S. 914, 89 S.Ct. 238, 21 L.Ed.2d 200 (1968), upholding the FCC’s alteration by rule-making of presunrise broadcasters’ permissible operations even though the rule’s effect was to modify license holders’ operating powers without an individualized hearing specified for cases of license modification by 47 U.S.C. § 316 (1970); California Citizens Band Assn v. United States, 9 Cir., 375 F.2d 43 (1967), applying the Storer doctrine allowing rule-making to alter the powers of citizens radio service licensees without individualized hearings; Weinberger v. Hynson, Westcott & Dunning, Inc., 412 U.S. 609, 619-621, 93 S.Ct. 2469, 37 L.Ed.2d 207 (1973). Storer and its successors are, of course, closely related to the question we face here. For a major component of appellees’ complaint is the abridgement of their interest in having the Trade Commission Act’s standard of illegality elaborated only in an adjudicatory context. In our view, this argument was adequately answered in Storer, at least to the extent the FTC’s rule serves the “purpose of shortening and simplifying the adjudicative process and of clarifying the law in advance,” and thus, in Storer’s language, aids the Commission in the “orderly conduct, of its business.” This obvious judicial willingness to permit substantive rule-making to undercut the primacy of adjudication in the development of agency policy is not limited to cases involving the FCC. The Federal Power Commission has successfully utilized rules regulating practical business conduct to frame, and even to cut off, what were once thought to be certificate applicants’ absolute rights to individualized adjudications. This practice was upheld in large part on the authority of Storer in FPC v. Texaco, Inc., supra. Similarly, this court has upheld the authority of the Civil Aeronautics Board to utilize substantive rules affecting allocation of air cargo business among different types of air carriers to modify existing certificates without the full adjudicatory hearing contemplated by the agency’s statute. See American Airlines, Inc. v. CAB, 123 U.S.App.D.C. 310, 359 F.2d 624 (1966) (en banc). And see also Air Lines Pilots Assn, Int. v. Quesada, 2 Cir., 276 F.2d 892 (1960), upholding a Federal Aviation Agency regulation barring pilots from service after their 60th birthday without providing for individualized hearings on the resultant modification of their pilots’ licenses. The propriety of using rule-making rather than adjudication alone to set substantive regulatory standards has also been approved under the Poultry Products Inspection Act which, like the Federal Trade Commission Act, authorizes an agency, there the Secretary of Agriculture, to promulgate rules and regulations, 21 U.S.C. § 463 (1970), and also provides for specific adjudicatory procedures to determine the existence of misleading food labels, 21 U.S.C. § 457 (1970). Borden Co. v. Freeman, D.N.J., 256 F.Supp. 592, affirmed, 3 Cir., 369 F.2d 404 (1966) (per curiam). Just as there has been little question of allowing substantive rule-making to intrude on asserted rights to a full hearing before an agency for a determination of a party’s rights and liabilities, there has been a similar lack of hesitation in construing broad grants of rule-making power to permit promulgation of rules with the force of law as a means of agency regulation of otherwise private conduct. See, e. g., American Trucking Assns v. United States, supra, upholding the Interstate Commerce Commission’s authority under the Motor Carrier Act, 49 U.S.C. § 301 et seq. (1970), to promulgate rules regulating the use of leased equipment by authorized motor carriers; Morgan Stanley & Co. v. SEC, 2 Cir., 126 F.2d 325 (1942), upholding SEC rules involving underwriters’ commissions in public utility offerings under the Public Utility Holding Company Act, 15 U.S.C. § 79a et seq. (1970). Indeed, the general rule courts have adopted toward agencies’ use of rule-making power to define standards of conduct by regulated parties, where a general rule-making provision is in the agency statute, was stated succinctly and definitively for this court by Judge Fahy in Public Service Comm’n of State of New York v. FPC, 117 U.S.App.D.C. 195, 199, 327 F.2d 893, 897 (1964): “All authority of the Commission need not be found in explicit language. Section 16 [the general rule-making provision] demonstrates a realization by Congress that the Commission would be confronted with unforeseen problems of administration in regulating this huge industry and should have a basis for coping with such confrontation. While the action of the Commission must conform with the terms, policies and purposes of the Act, it may use means which are not in all respects spelled out in detail. * * *» The need to interpret liberally broad grants of rule-making authority like the one we construe here has been emphasized time and again by the Supreme Court. Just recently the Court upheld the authority of the Federal Reserve Board to promulgate rules under the Truth-in-Lending Act, 15 U.S.C. § 1601 et seq. (1970), specifying new cost and financing disclosure requirements for merchants selling goods payable in more than four installments. Mourning v. Family Publications Service, Inc., 411 U.S. 356, 93 S.Ct. 1652, 36 L.Ed.2d 318 (1973). One such rule, promulgated under a general rule-making provision authorizing the Board to “prescribe regulations to carry out the purposes of [the Act],” 15 U.S.C. § 1604, was attacked on the ground that it was inconsistent with some portions of the statute, that the statute itself authorized a disclosure requirement with reference to transactions actually involving a finance charge, and that the Board was exceeding its authority and countermanding the statutory plan by using rule-making power to impose disclosure requirements on credit transactions where no finance charges are involved. Thus the challenge to the Federal Reserve Board’s rule was in some respects similar to the challenge here: we are told that rule-making is authorized with reference to one part of the Federal Trade Commission Act but not another, that the statutory standard of illegality may be enforced only through the case-by-case adjudication specifically mentioned in Section 5 of the Act, and that the grant of rule-making power in Section 6(g) must not be extended to allow elaboration of the Section 5 standard in nonadjudicatory proceedings. But Mourning rejected this crabbed, inhospitable construction of a broad grant of rule-making authority, relying in large part on American Trucking Assns v. United States, supra: “To accept respondent’s argument would undermine the flexibility sought in vesting broad rule making authority in an administrative agency. In American Trucking Association[s] v. United States, 344 U.S. 298, [73 S.Ct. 307, 97 L.Ed. 337] (1953), we noted that it was not— ‘a reasonable canon of interpretation that the draftsmen of acts delegating agency powers, as a practical and realistic matter, can or do include specific consideration of every evil sought to be corrected. [N]o great acquaintance with practical affairs is required to know that such prescience, either in fact or in the minds of Congress, does not exist. Its very absence, moreover, is precisely one of the reasons why regulatory agencies such as the Commission are created, for it is the fond hope of their authors that they bring to their work the expert’s familiarity with industry conditions which members of the delegating legislatures cannot be expected to possess.’ 344 U.S., at 309-310, [73 S.Ct. at 314] (citations omitted). Neither the sections of the Truth-in-Lending Act which refer specifically to transactions involving finance charges nor any other sections of the Act indicate that Congress attempted to list comprehensively all types of transactions to which the Board’s regulations might apply. To the contrary, [the] broad grant of rule making authority [in 15 U.S.C. § 1604] reflects an intention to rely on those attributes of agency administration recognized in American Trucking. We cannot then infer that references in the Act to transactions involving credit charges were intended to limit the deterrent measures which the Board might choose.” 411 U.S. at 372-373, 93 S.Ct. at 1662. Thus there is little question that the availability of substantive rule-making gives any agency an invaluable resource-saving flexibility in carrying out its task of regulating parties subject to its statutory mandate. More than merely expediting the agency’s job, use of substantive rule-making is increasingly felt to yield significant benefits to those the agency regulates. Increasingly, courts are recognizing that use of rule-making to make innovations in agency policy may actually be fairer to regulated parties than total reliance on case-by-case adjudication. The Supreme Court made this suggestion initially in SEC v. Chenery Corp., 332 U.S. 194, 67 S.Ct. 1575, 91 L.Ed. 1995 (1947), where it dealt with an agency adjudication imposing novel restraints on the power of management of corporations to purchase stock during periods of reorganization under the Pub-lie Utility Holding Company Act of 1935. While the Court did not hold that the Securities and Exchange Commission was bound to follow rule-making procedures in making such a marked policy departure, it was clearly aware that exclusive reliance on adjudication could be criticized for unfairly focusing on a single defendant in a restricted proceeding when promulgating a new policy with industry-wide ramifications. The:,Court said: “■>:• * * The function of filling in the interstices of the Act should be performed, as much as possible, through this quasi-legislative promulgation of rules to be applied in the future. * * * ” 332 U.S. at 202, 67 S.Ct. at 1580. Four years ago a majority of the Supreme Court hinted that there may be circumstances where agency policy innovations should be made only in rule-making proceedings. In NLRB v. Wyman-Gordon Co., 394 U.S. 759, 89 S.Ct. 1426, 22 L.Ed. 709 (1969), the Court upheld an adjudicatory order based on a prior decision where the Labor Board had decided that a new rule of management conduct during election campaigns should operate only prospectively. But the four-man plurality opinion by Mr. Justice Fortas sharply criticized the Board’s initial promulgation in adjudicatory proceedings of a rule applicable in election campaigns generally. He argued that rule-making, under the Administrative Procedure Act’s provisions for advance notice and broad public participation, 5 U.S.C. § 553 (1970), assured “fairness and mature consideration” in a way that adjudication, inevitably tending to focus more narrowly on the behavior of given parties, could not. 394 U.S. at 764, 89 S.Ct. 1426. Mr. Justice Douglas, dissenting from the majority’s actual holding, argued similarly that where the Board imposed a new standard of conduct that is “not particularized to special facts * * * [but] is a statement of far-reaching policy covering all future representation elections,” id. at 777, 89 S.Ct. at 1435, it should be required to follow the APA’s rule-making procedures. He stressed that rule-making, unlike adjudication, “gives notice to an entire segment of society of those controls or regimentation that is forthcoming * * * [and] an opportunity for persons affected to be heard.” Ibid., 89 S.Ct. at 1436. And since the agency is bound under the APA to consider the submissions of those affected between the time a rule is proposed and when it is promulgated, 5 U.S.C. § 553(c), (d), it has a valuable opportunity to modify its initial inclinations. In other words, by exposing itself to a wider range of criticism and advice than is ordinarily available in adjudicatory proceedings the agencies may, in Mr. Justice Douglas’ words, “discover that they are not always repositories of ultimate wisdom; they learn from the suggestions of outsiders and often benefit from that advice.” Id. at 777-778, 89 S.Ct. 1436. Also dissenting, Mr. Justice Harlan said that where the agency had taken the position that its new adjudication-based rule was so revolutionary that it could be applied only prospectively, such marked departures in agency policy could only be taken through rule-making: “Either the rule-making provisions [of the APA] are to be enforced or they are not. Before the Board may be permitted to adopt a rule that so significantly alters pre-existing labor-management understandings, it must be required to conduct a satisfactory rule-making proceeding, so that it will have the benefit of wide-ranging argument before it enacts its proposed solution to an important problem.” Id. at 781, 89 S.Ct. at 1438. Even more recently, the Second Circuit has taken Wyman-Gordon’s suggestions to their logical conclusion. In Bell Aerospace Div. of Textron, Inc. v. NLRB, 2 Cir., 475 F.2d 485 (1973), that court refused to enforce a Labor Board bargaining order in part on the ground that the Board had made such a significant change in its previous definition of types of workers protected by the National Labor Relations Act that rule-making rather than adjudication was required. In holding that the agency “should be particularly sure that it has all available information,” 475 F.2d at 497, Chief Judge Friendly’s opinion ordering rule-making, id. at 496, relied heavily on a factor stressed in the opinions of Justices Fortas, Douglas and Harlan in Wyman-Gordon — a sharp change in agency policy with obvious effects on a vastly wider range of parties than those immediately before the agency. Id. at 496-497. Moreover, he stressed that the argument for mandatory rule-making was especially strong where the defendant was exposed by the adjudicatory order to “new and unexpected liability.” Id. at 497. This judicial trend favoring rule-making over adjudication for development of new agency policy does not, of course, directly dispose of the question before us. There was no question that the SEC in Chenery had substantive rule-making powers. See 332 U.S. at 201, 67 S.Ct. 1575. And Wyman-Gordon assumed that the NLRB also had substantive rule-making powers under 29 U.S.C. § 156 (1970). 394 U.S. at 763-765 & n. 3, 89 S.Ct. 1426. Here we must decide just that question, whether Congress has given the FTC the same alternate means of proceeding, not whether the FTC should be required to use rule-making in some circumstances. But Chenery, Wyman-Gordon and Bell Aerospace cannot be ignored, for they indisputably flesh out the contemporary legal framework in which both the FTC and this court operate and which we must recognize. See Moragne v. States Marine Lines, Inc., 398 U.S. 375, 390-391, 90 S.Ct. 1772, 26 L.Ed.2d 339 (1970). To us, these cases suggest that contemporary considerations of practicality and fairness — specifically the advisability of utilizing the Administrative Procedure Act’s rule-making procedures to provide an agency about to embark on legal innovation with all relevant arguments and information, 5 U.S.C. § 553 — certainly support the Commission’s position here. As Wyman-Gordon and Bell Aerospace explicitly noted, utilizing rule-making procedures opens up the process of agency policy innovation to a broad range of criticism, advice and data that is ordinarily less likely to be forthcoming in adjudication. Moreover, the availability of notice before promulgation and wide public participation in rule-making avoids the problem of singling out a single defendant among a group of competitors for initial imposition of a new and inevitably costly legal obligation, cf. Weinberger v. Bentex Pharmaceuticals, Inc., 412 U.S. 645, 652-654, 93 S.Ct. 2488, 37 L.Ed.2d 235 (1973); Weinberger v. Hynson, Westcott & Dunning, Inc., supra, 412 U.S. at 625-628, 93 S.Ct. 2469; FTC v. Universal-Rundle Corp., 387 U.S. 244, 87 S.Ct. 1622, 18 L.Ed.2d 749 (1967); Moog Industries, Inc. v. FTC, 355 U.S. 411, 78 S.Ct. 377, 2 L.Ed.2d 370 (1958). Such benefits are especially obvious in cases involving initiation of rules of the sort the FTC has promulgated here. The Commission’s statement on basis and purpose indicated that the decision to impose the obligation of octane rating disclosure on gasoline dealers entailed careful consideration of automobile engine requirements, automobile dealers’ practices in instructing purchasers how to care for their engines, consumer gasoline purchasing habits, and costs to gasoline dealers. In addition, the Commission had to choose exactly what kind of disclosure was the fairest. In short, a vast amount of data had to be compiled and analyzed, and the Commission, armed with these data, had to weigh the conflicting policies of increasingly knowledgeable consumer decision-making against alleged costs to gasoline dealers which might be passed on to the consumer. True, the decision to impose a bright-line standard of behavior might have been evolved by the Commission in a single or a succession of adjudicatory proceedings, see, e. g., FTC v. Texaco, Inc., 393 U.S. 223, 89 S.Ct. 429, 21 L.Ed.2d 394 (1968), much as the Supreme Court has imposed per se rules of business behavior in antitrust cases. See, e. g., United States v. Topco Associates, Inc., 405 U.S. 596, 92 S.Ct. 1126, 31 L.Ed.2d 515 (1972) (horizontal territorial restraints); United States v. Socony-Vacuum Oil Co., 310 U.S. 150, 60 S.Ct. 811, 84 L.Ed. 1129 (1940) (price fixing). But evolution of bright-line rules is often a slow process and may involve the distinct disadvantage of acting without the broad range of data and argument from all those potentially affected that may be flushed out through use of legislative-type rule-making procedures. Cf. United States v. Topco Associates, Inc., supra, 405 U.S. at 620, 92 S.Ct. 1126 (Mr. Chief Justice Burger, dissenting). And utilizing rule-making in advance of adjudication here minimizes the unfairness of using a purely case-by-case approach requiring “compliance by one manufacturer while his competitors [engaging in similar practices] remain free to violate the Act.” Weinberger v. Bentex Pharmaceuticals, Inc., supra, 412 U.S. at 653, 93 S.Ct. at 2494. In light of Chenery, Wyman-Gordon and Bell Aerospace, therefore, it is hard to escape noting that the policy innovation involved in this case underscores the need for increased reliance on rule-making rather than adjudication alone. Ill Appellees contend, however, that these cases and the general practice of agencies and courts in underwriting the broad use of rule-making are irrelevant to the FTC. They argue that the Trade , Commission is somehow sui generis, that it is best characterized as a prosecuting rather than a regulatory agency, and that substantive rule-making power should be less readily implied from a general grant of rule-making authority where the agency does not stand astride an industry with pervasive license-granting, rate-setting, or clearance functions. Initially it should be noted that appellees, for obvious reasons, do not rely on the NLRB in making their pros-ecutorial argument. The statutory method of adjudication and enforcement used by the NLRB is, of course, very similar to that of the FTC. Compare 29 U.S.C. § 160 (1970) with 15 U.S.C. § 45. And the courts, including the Supreme Court, have, as shown in the preceding section, repeatedly encouraged the NLRB to make use of its general grant of rule-making authority, 29 U.S.C. § 156, to issue substantive rules. We do not assert that the FTC is compelled by its statutory charter to exert the kind of ongoing regulatory scrutiny exercised by agencies like the FCC, FPC, ICC, SEC, CAB, or even the Department of Agriculture. But we do not find the absence of license-granting, rate-making or clearance power a sufficiently principled distinction to accept appellees’ argument. For a more compelling argument can be made that the FTC’s duty to prevent “unfair methods of competition” and “unfair or deceptive acts or practices” is just as potentially pervasive, in the sense of affecting commercial practices, as the regulatory schemes of agencies utilizing rate-making, licensing, and similar means of regulation. The FTC’s charter to prevent unfair methods of-competition is tantamount to a power to scrutinize and to control, subject of course to judicial review, the variety of contracting devices and other means of business policy that may contradict the letter or the spirit of the antitrust laws. FTC v. Brown Shoe Co., 384 U.S. 316, 320-322, 86 S.Ct. 1501, 16 L.Ed.2d 587 (1966); FTC v. Motion Picture Advertising Service Co., 344 U.S. 392, 394-395, 73 S.Ct. 361, 97 L.Ed. 426 (1953); FTC v. Cement Institute, 333 U.S. 683, 689-695, 68 S.Ct. 793, 92 L.Ed. 1010 (1948). The pervasiveness of the antitrust laws’ coverage, in the sense of affecting business decision-making, needs no elaboration. Suffice it to say that it cuts deeply into and, with limited exceptions, widely across virtually all of American business. In addition, under its mandate to prevent “unfair or deceptive acts or practices,” the Commission has the responsibility to protect the consumer from being misled by governing the conditions under which goods and services are advertised and sold to individual purchasers. See FTC v. Sperry & Hutchinson Co., 405 U.S. 233, 239-244, 92 S.Ct. 898, 31 L.Ed. 170 (1972). And while the boundaries of the Commission’s power to proscribe conduct it deems harmful to the consumer or to competition are not clearly defined, they are indeed expansive. Id. at 244, 92 S.Ct. 898. Given the expanse of the Commission’s power to define proper business practices, we believe it is but a quibble to differentiate between the potential pervasiveness of the FTC’s power and that of the other regulatory agencies merely on the basis of its prosecutorial and adjudicatory mode of proceeding. Like other agencies, wholly apart from the question of rule-making power it exerts a powerfully regulatory effect on those business practices subject to its supervision. Of course, its regulatory authority is not complete. But neither is the regulation exercised by other agencies. See J. I. Case Co. v. Borak, 377 U.S. 426, 432, 84 S.Ct. 1555, 12 L.Ed.2d 423 (1964). And the Commission has this regulatory effect irrespective of whether it chooses to elaborate the vague but comprehensive statutory standards through rule-making or through case-by-ease adjudication. Businesses whose practices appear clearly covered by the Trade Commission’s adjudicatory decisions against similarly situated parties presumably will comply with the Commission’s holding rather than await a Commission action against them individually ; we must presume that in many cases where a guideline is laid down in an individual case it is, like many common law rules, generally obeyed by those similarly situated. Moreover, there are ample indications in the Commission’s legislative history that the agency, by gathering information on business practices, issuing periodic reports, and moving against those practices which appear “unfair,” was meant to have just this sort of regulatory impact, despite the purely prosecutorial mode of proceeding provided in Section 5 of the Act. Not only is the Commission’s regulatory power much broader than ap-pellees would have us believe; there is simply no compelling evidence in the Act’s legislative history or in the language of the statute itself which would limit the exercise of that power to the prosecutorial function or prevent the Commission from making that function more effective by rule-making. IV Although we believe there are thus persuasive considerations for accepting the FTC’s view that the plain meaning of the statute supports substantive rule-making, the question is not necessarily closed. For appellees’ contention — that the phrase “rules and regulations for the purpose of carrying out” Section 5 refers only to rules of procedure and practice for carrying out the Commission’s adjudicatory responsibility — is not implausible. The opinion of the District Court argues forcefully that, in spite of the clear and unlimited language of Section 6(g) granting rule-making authority to the Commission, the Congress that enacted Section 5 and Section 6(g) gave clear indications of its intent to reject substantive rule-making, that the FTC’s own behavior in the years since that time supports a narrow interpretation of its mandate to promulgate “rules and regulations,” and that where Congress desired to give the FTC substantive rule-making authority in discrete areas it did so in subsequent years in unambiguous terms. Our own conclusion, based on an independent review of this history, is different. We believe that, while the legislative history of Section 5 and Section 6(g) is ambiguous, it certainly does not compel the conclusion that the Commission was not meant to exercise the power to make substantive rules with binding effect in Section 5(a) adjudications. We also believe that the plain language of Section 6(g), read in light of the broad, clearly agreed-upon concerns that motivated passage of the Trade Commission Act, confirms the framers’ intent to allow exercise of the power claimed here. We do not find the District Court’s reliance on the agency’s long-standing practice, until 1962, of not utilizing rule-making or the District Court’s reliance on enactment of specific grants of rule-making power in narrow areas sufficiently persuasive to override our view, and the Commission’s view, that rule-making is not only consistent with the original framers’ broad purposes, but appears to be a particularly apt means of carrying them out. In analyzing the origins of the Federal Trade Commission Act of 1914, and Section 5 and 6(g) in particular, both parties would have us focus heavily on the floor debates and committee reports that accompanied the legislation on its tortuous path toward enactment. Certainly these materials are relevant to our inquiry and cannot be ignored. But our examination of the comments made by legislators that allegedly bear directly on the question whether the Commission was initially meant to exercise substantive, legislative-type rule-making power has led us to the conclusion, familiar in cases dealing with strongly contested questions of statutory interpretation, that the specific intent of Congress here cannot be stated with any assurance. The materials cited to us indicate that the question before us — whether the Commission can elaborate the meaning of Section 5’s standard of illegality through rule-making as well as through case-by-case adjudication — was not confronted straightforwardly and decisively. Given this conclusion, which we elaborate in detail in the appendix to this opinion, we are hardly at liberty to override the plain, expansive language of Section 6(g) as well as the gloss that has been placed on that kind of rule-making provision by the series of decisions dealing with agencies whose enabling statutes have similar rule-making provisions. See United States v. Oregon, 366 U.S. 643, 647-648, 81 S.Ct. 1278, 6 L.Ed.2d 575 (1961). Moreover, while we believe the historical evidence is indecisive of the question before us, we are convinced that the broad, undisputed policies which clearly motivated the framers of the Federal Trade Commission Act of 1914 would indeed be furthered by our view as to the proper scope of the Commission’s rule-making authority. The multiplicity of differing plans proposed for a trade commission prior to 1914 and during the intensive debates in 1914 immediately preceding enactment of the Trade Commission Act demonstrates, of course, that proponents of the agency were hardly agreed on exactly what powers the agency should assume. But the variety of plans and the proponents of the agency all unquestionably shared deep objections to the existing structure of judicial monopolization of cases involving unfair, anticompetitive business practices. Those who believed from the start in a commission with independent enforcement powers, as the Commission was finally given in the 1914 legislation, and those who believed the Commission should have lesser powers, agreed that entrusting enforcement of congressional policy to prevent undue incursions on competition exclusively to the courts was a serious mistake. The courts were said to lack sufficient expertise in matters of economic complexity, their decisions were said to be wanting in the clarity planners of complicated business transactions and innovations required, and finally and most importantly, the courts lacked both the resources and the skill to proceed with speed and expedition in the trial and disposition of complicated cases involving economic questions. This concern over judicial delay, inefficiency and uncertainty was echoed time and again throughout the 1914 debates over the form a commission would take. In determining the legislative intent, our duty is to favor an interpretation which would render the statutory design effectivé in terms of the policies behind its enactment and to avoid an interpretation which would make such policies more difficult of fulfillment, particularly where, as here, that interpretation is consistent with the plain language of the statute. See Bird v. United States, 187 U.S. 118, 124, 23 S.Ct. 42, 47 L.Ed. 100 (1902); United States v. Blasius, 2 Cir., 397 F.2d 203, 207 n. 9 (1968), cert. dismissed, 393 U.S. 1008, 89 S.Ct. 615, 21 L.Ed.2d 557 (1969). “[I]n the absence of an unmistakable directive,” we cannot “construe the Act in a manner which runs counter to the broad goals which Congress intended it to effectuate.” FTC v. Fred Meyer, Inc., 390 U.S. 341, 349, 88 S.Ct. 904, 908, 19 L.Ed.2d 1222 (1968). Indeed, as Mr. Justice Harlan put it in a case involving a question of the Federal Power Commission’s power under a general rule-making provision to alter radically its customary modes of proceeding, “This Court has repeatedly held that the width of administrative authority must be measured in part by the purposes for which it was conferred.” Permian Basin Area Rate Cases, 390 U.S. 747, 776, 88 S.Ct. 1344, 1364, 20 L.Ed.2d 312 (1968); see also id. n. 40; Thorpe v. Housing Authority of the City of Durham, 393 U.S. 268, 277-281, 89 S.Ct. 518, 21 L.Ed.2d 474 (1969) (upholding rules of the United States Department of Housing and Urban Development promulgated pursuant to a rule-making provision, 42 U.S.C. § 1408 (1970), phrased in terms almost identical with those of Section 6(g) of the Trade Commission Act). This view was reiterated just a few weeks ago by Mr. Chief Justice Burger, writing for the Court: “* -x- x Where the empowering provision of a statute states simply that the agency may ‘make . . . such rules and regulations as may be necessary to carry out the provisions of this Act,’ we have held that the validity of a regulation promulgated thereunder will be sustained so long as it is ‘reasonably related to the purposes of the enabling legislation.’ •X- X X ” Mourning v. Family Publications Service, Inc., supra, 411 U.S. at 369, 93 S.Ct. 1660-1661. (Footnote omitted.) In short, where a statute is said to be susceptible of more than one meaning, we must not only consult its language; we must also relate the interpretation we provide to the felt and openly articulated concerns motivating the law’s framers. See J. I. Case Co. v. Borak, supra, 377 U.S. at 432-433, 84 S.Ct. 1555. In this way we may be sure we are construing the statute rather than constructing a new one. The problems of delay and inefficiency that proponents of both a strong and a weak commission aimed to eliminate or minimize have plagued the Trade Commission down to the present. While the Commission has broad common law-like authority to delineate the scope of the statute’s prohibitions, see FTC v. Sperry & Hutchinson Co., supra, 405 U.S. at 244, 92 S.Ct. 898, like the federal courts it was designed to supplement, it has remained hobbled in its task by the delay inherent in repetitious, lengthy litigation of cases involving complex factual questions under a broad legal standard. Close students of the agency agree that the historic case-by-case purely adjudicatory method of elaborating the Section 5 standard and applying it to discrete business practices has not only produced considerable uncertainty, see Report of the ABA Commission to Study the Federal Trade Commission 11 (1969); Auerbach, The Federal Trade Commission: Internal Organization and Procedure, 48 Minn.L.Rev. 383, 445-449, 464-465, 518-519 (1964); Cushman, The Problem of the Independent Regulatory Commissions 24 in President’s Com’n on Administrative Management, Studies No. 1-5 (1937); Baum, Reorganization, Delay and the Federal Trade Commission, 15 Admin.L.Rev. 92, 93, 108-110 (1963), but also has helped to spawn litigation the length of which has frequently been noted ruefully by commentators on the Commission’s performance. See Note, The Federal Trade Commission and Reform of the Administrative Process, 62 Colum.L.Rev. 671, 692-693 (1962); Report of the ABA Commission to Study the Federal Trade Commission, supra, at 10, 28-32. We believe that, to the extent substantive rule-making to implement Section 5 proceedings is likely to deal with these problems given the statutory authority provided in Section 6(g), the Commission’s position should be upheld as a reasonable means of attacking ills the Commission was created to cure. There is little disagreement that the Commission will be able to proceed more expeditiously, give, greater certainty to businesses subject to the Act, and deploy its internal resources more efficiently with a mixed system of rule-making and adjudication than with adjudication alone. With the issues in Section 5 proceedings reduced by the existence of a rule delineating what is a violation of the statute or what presumptions the Commission proposes to rely upon, proceedings will be speeded up. For example, in an adjudication proceeding based on a violation of the octane rating rule at issue here, the central question to be decided will be whether or not pumps owned by a given refiner are properly marked. See also pages 691-692 infra. Without the rule, the Commission might well be obliged to prove and argue that the absence of the rating markers in each particular ease was likely to have injurious and unfair effects on consumers or competition. Since this laborious process might well have to be repeated every time the Commission chose to proceed subsequently against another defendant on the same ground, the difference in administrative efficiency between the two kinds of proceedings is obvious. Furthermore, rules, as contrasted with the holdings reached by case-by-case adjudication, are more specific as to their scope, and industry compliance is more likely simply because each company is on clearer notice whether or not specific rules apply to it. Moreover, when delay in agency proceedings is minimized by using rules, those violating the statutory standard lose an opportunity to turn litigation into a profitable and lengthy game of postponing the effect of the rule on their current practice. As a result, substantive rules will protect the companies which willingly comply with the law against what amounts to the unfair competition of those who would profit from delayed enforcement as to them. This, too, will minimize useless litigation and is likely to assist the Commission in more effectively allocating its resources. In addition, whatever form rules take, whether bright-line standards or presumptions that are rebuttable, they are likely to decrease the current uncertainty many businesses are said to feel over the current scope and applicability of Section 5. But the important point here is not that rule-making is assuredly going to solve the Commission’s problems. It is rather than recognition and use of rule-making by the Commission is convincingly linked to the goals of agency expedition, efficiency, and certainty of regulatory standards that loomed in the background of the 1914 passage of the Federal Trade Commission Act. This relationship between rule-making’s probable benefits and the broad concerns evident when the FTC was created, together with the express language of Section 6(g), help persuade us that any purported ambiguity of the statute be resolved in favor of the Commission’s claim. “In a case much more clouded with doubts than this one, we held that we would not ‘in the absence of compelling evidence that such was Congress’ intention . . . prohibit administrative action imperative for the achievement of an agency’s ultimate purposes.’ Permian Basin Area Rate Cases, 390 U.S. 747, 780, 88 S.Ct. 1344, 1367, 20 L.Ed.2d 312.” Weinberger v. Bentex Pharmaceuticals, Inc., supra, 412 U.S. at 653, 93 S.Ct. at 2494. V Despite the import of Section 6(g)’s plain language, the overwhelming judicial support given to expansive agency readings of statutory rule-making authorizations that are not flatly inconsistent with other statutory provisions, and the incontestable relationship between the broad policies behind the 1914 Act and the utility of substantive rule-making power, appellees argue that substantive rule-making represents a sufficiently important innovation in Commission practice for us to balk at authorizing its use on the basis of an arguably ambiguous statute in the absence of very firm indications of affirmative and specific legislative intent. Indeed, courts have assumed such a stance toward novel assertions of agency powers. This court did so in Textile and Apparel Group v. FTC, supra, where we reviewed an agency rule allowing for ex parte seizure of imports at Customs and a procedure for testing goods prior to entry, both without provision for the Trade Commission’s normal enforcement procedure of adversary cease-and-desist proceedings and judicial review. Because this procedure entirely dispensed with a hearing and because it varied so sharply from the Commission’s customary mode of proceeding against possible wrongdoers, we structured our review to “look for some fairly strong indication, backed by sound policy, that Congress meant for the Commission to act in this way.” 133 U.S.App.D.C. at 356, 410 F.2d at 1055. See also FMC v. Anglo-Canadian Shipping Co., 9 Cir., 335 F.2d 255, 258-259 (1964) (involving agency use of pre-hearing discovery procedures). Unlike either Textile & Apparel Group or Anglo-Canadian Shipping Co., this ease does not involve nearly so drastic a departure from accustomed modes of agency proceeding. The rule here does not bypass the Commission’s statute-based cease-and-desist proceedings. It merely supplements them. Moreover, in light of the concern evident in the legislative history that the Commission give attention to the special circumstances of individual businesses in proceeding against them, see Appendix at pages 704-705, the Commission should administer any rules it might promulgate in much the same way that courts have ordinarily required other agencies to administer rules that operate to modify a regulated party’s rights to a full hearing. That is, some opportunity must be given for a defendant in a Section 5 proceeding to demonstrate that the special circumstances of his case warrant waiving the rule’s applicability, as where the rationale of the rule does not appear to apply to his own situation or a compelling case of hardship can be made out. See FPC v. Texaco, Inc., supra, 377 U.S. at 40, 84 S.Ct. 1105; United States v. Storer Broadcasting Co., supra, 351 U.S. at 205, 76 S.Ct. 763; Gulf Oil Corp. v. Hickel, 140 U.S.App.D.C. 368, 375, 435 F.2d 440, 447 (1970); WAIT Radio v. FCC, 135 U.S.App.D.C. 317, 321, 418 F.2d 1153, 1157 (1969); Sun Oil Co. v. FPC, 5 Cir., 355 F.2d 181, 183 (1965). See generally Sofaer, Judicial Control of Informal Discretionary Adjudication and Enforcement, 72 Colum.L.Rev. 1293, 1329-1330 (1972); Note, The Use of Agency Rulemaking to Deny Adjudications Apparently Required by Statute, 54 Iowa L.Rev. 1086, 1104-1105, 1115-1119 (1969). Moreover, as we have pointed out, substantive rule-making is a widely utilized practice throughout our administrative agencies, and its use has been upheld even in cases where its use appears to conflict with regulated parties’ adjudicatory rights, as in Storer, Texaco, Inc., and their successors. In dealing with this apparent conflict of private parties’ adjudicatory rights and the agencies’ interests in promulgating clear policy guidelines to provide notice to an industry and to avoid time-consuming individualized hearings on issues that are common in that industry, courts have stressed the advantages of efficiency and expedition which inhere in reliance on rule-making instead of adjudication alone. See FPC v. Texaco, Inc., supra, 377 U.S. at 44, 84 S.Ct. 1105; American Airlines, Inc. v. CAB, supra, 123 U.S.App.D.C. at 315, 359 F.2d at 629; see also Weinberger v. Bentex Pharmaceuticals, Inc., supra, 412 U.S. at 649-654, 93 S.Ct. 2488; Weinberger v. Hynson, Westcott & Dunning, Inc., supra, 412 U.S. at 619-628, 93 S.Ct. 2469. Furthermore, under the Administrative Procedure Act the public, including all parties in the industry who might be affected, are given a significant opportunity prior to promulgation of a rule to ventilate the policy and empirical issues at stake through written submissions, at a minimum, see 5 U.S.C. § 553, or more, as here, where the agency permitted oral argument in a nonadjudicatory setting. Finally, any rules promulgated by the agency are subject to judicial review testing their legality and ensuring that they are within the scope of the broad statutory prohibition they purport to define. Any fears that the agency could successfully use rule-making power as a means of oppressive or unreasonable regulation seem exaggerated in view of courts’ general practice in reviewing rules to scrutinize their statement of basis and purpose to see whether the major issues of policy pro and con raised in the submissions to the agency were given sufficient consideration. Automotive Parts & Accessories Assn v. Boyd, 132 U.S.App.D.C. 200, 208-213, 407 F.2d 330, 338-343 (1968). See also City of Chicago, Ill. v. FPC, 147 U.S.App.D.C. 312, 322-326, 458 F.2d 731, 741-745 (1971), cert. denied, 405 U.S. 1074, 92 S.Ct. 1495, 31 L.Ed.2d 808 (1972). The Commission is hardly free to write its own law of consumer protection and antitrust since the statutory standard which the rules may define with greater particularity is a legal standard. Although the Commission’s conclusions as to the standard’s reach are ordinarily shown deference, see FTC v. Motion Picture Advertising Service Co., supra, 344 U.S. at 396, 73 S.Ct. 361; FTC v. Cement Institute, supra, 333 U.S. at 720-721, 68 S.Ct. 793; FTC v. R. F. Keppel & Bro., Inc., 291 U.S. 304, 314, 54 S.Ct. 423, 78 L.Ed. 814 (1934), the standard must “get [its] final meaning from judicial construction.” FTC v. Colgate-Palmolive Co., 380 U.S. 374, 385, 85 S.Ct. 1035, 1043, 13 L.Ed.2d 904 (1965). See also FTC v. Cement Institute, supra, 333 U.S. at 709, 68 S.Ct. 793; Atlantic Refining Co. v. FTC, 381 U.S. 357, 368, 85 S.Ct. 1498, 14 L.Ed.2d 443 (1965). As we suggested earlier, our task in determining the meaning of this legislation is the usual one of “starting from the areas where the legislative intent is readily discernible, and projecting to fair and reasonable corollaries of that intent for the specific issue before us.” Montana Power Co. v. FPC, 144 U.S.App.D.C. 263, 270, 445 F.2d 739, 746 (1970) (en banc), cert. denied, 400 U.S. 1013, 91 S.Ct. 566, 27 L.Ed.2d 627 (1971) . Under this approach, we start here with the language of Section 6(g). It is as clear as it is unlimited: “The Commission shall also have power * * * make rules and regulations for the purpose of carrying out the provisions of [Section 5].” Ambiguous legislative history cannot change the express legislative intent. The Commission is using rule-making to carry out what the Congress agreed was among its central purposes: expedited administrative enforcement of the national policy against monopolies and unfair business practices. Under the circumstances, since Section 6(g) plainly authorizes rule-making and nothing in the statute or in its legislative history precludes its use for this purpose, the action of the Commission must be upheld. VI Our conclusion as to the scope of Section 6(g) is not disturbed by the fact that the agency itself did not assert the power to promulgate substantive rules until 1962 and indeed indicated intermittently before that time that it lacked such power. As the Supreme Court put it in United States v. Morton Salt Co., supra, a case which involved what was thought to be a novel assertion of the FTC’s statutory authority: “The fact that powers long have been unexercised well may call for close scrutiny as to whether they exist; but if granted, they are not lost by being allowed to lie dormant, any more than nonexistent powers can be prescripted by an unchallenged exercise. We know that unquestioned powers are sometimes unexercised from lack of funds, motives of expediency, or the competition of more immediately important concerns. We find no basis for holding that any power ever granted to the Trade Commission has been forfeited by nonuser [sic].” 338 U.S. at 647-648, 70 S.Ct. at 366. See also FTC v. Dean Foods Co., supra, 384 U.S. at 610, 86 S.Ct. 1738; United States v. E. I. duPont & Co., 353 U.S. 586, 590, 77 S.Ct. 872, 1 L.Ed.2d 1057 (1957). The various statements made by Commission representatives questioning its authority to promulgate rules which are to be used with binding effect on subsequent adjudications are not determinative of the question before us. True, the accustomed judicial practice is to give “great weight” to an agency’s construction of its own enabling legislation, particu