whom Congress has singled out as statutory beneficiaries. The interests at stake in review of administrative enforcement decisions are thus more focused and in many circumstances more pressing than those at stake in criminal prosecutorial decisions. A request that a nuclear plant be operated safely or that protection be provided against unsafe drugs is quite different from a request that an individual be put in jail or his property confiscated as punishment for past violations of the criminal law. Unlike traditional exercises of prosecutorial discretion, "the decision to enforce—or not to enforce—may itself result in significant burdens on a ... statutory beneficiary." Marshall v. Jerrico, Inc., supra, at 249.
Perhaps most important, the sine qua non of the APA was to alter inherited judicial reluctance to constrain the exercise of discretionary administrative power—to rationalize and make fairer the exercise of such discretion. Since passage of the APA, the sustained effort of administrative law has been to "continuously narro[w] the category of actions considered to be so discretionary as to be exempted from review." Shapiro, Administrative Discretion: The Next Stage, 92 Yale L. J. 1487, 1489, n. 11 (1983). Discretion may well be necessary to carry out a variety of important administrative functions, but discretion can be a veil for laziness, corruption, incompetency, lack of will, or other motives, and for that reason "the presence of discretion should not bar a court from considering a claim of illegal or arbitrary use of discretion." L. Jaffe, Judicial Control of Administrative Action 375 (1965). Judicial review is available under the APA in the absence of a clear and convincing demonstration that Congress intended to preclude it precisely so that agencies, whether in rulemaking, adjudicating, acting or failing to act, do not become stagnant backwaters of caprice and lawlessness. "Law has reached its finest moments when it has freed man from the unlimited discretion of some ruler, some civil or military official, some bureaucrat." United States v. Wunderlich, 342 U. S. 98, 101 (1951).
