may require that the agency follow that law; if it has not, then an agency refusal to institute proceedings is a decision "committed to agency discretion by law" within the meaning of that section.
III
To enforce the various substantive prohibitions contained in the FDCA, the Act provides for injunctions, 21 U. S. C. § 332, criminal sanctions, §§ 333 and 335, and seizure of any offending food, drug, or cosmetic article, § 334. The Act's general provision for enforcement, § 372, provides only that "[t]he Secretary is authorized to conduct examinations and investigations ..." (emphasis added). Unlike the statute at issue in Dunlop, § 332 gives no indication of when an injunction should be sought, and § 334, providing for seizures, is framed in the permissive—the offending food, drug, or cosmetic "shall be liable to be proceeded against." The section on criminal sanctions states baldly that any person who violates the Act's substantive prohibitions "shall be imprisoned ... or fined." Respondents argue that this statement mandates criminal prosecution of every violator of the Act but they adduce no indication in case law or legislative history that such was Congress' intention in using this language, which is commonly found in the criminal provisions of Title 18 of the United States Code. See, e. g., 18 U. S. C. § 471 (counterfeiting); 18 U. S. C. § 1001 (false statements to Government officials); 18 U. S. C. § 1341 (mail fraud). We are unwilling to attribute such a sweeping meaning to this language, particularly since the Act charges the Secretary only with recommending prosecution; any criminal prosecutions must be instituted by the Attorney General. The Act's enforcement provisions thus commit complete discretion to the Secretary to decide how and when they should be exercised.
Respondents nevertheless present three separate authorities that they claim provide the courts with sufficient indicia of an intent to circumscribe enforcement discretion. Two of these may be dealt with summarily. First, we reject
