Administrative Procedure Act

“The Administrative Procedure Act, which governs the proceedings of administrative agencies and related judicial review, establishes a scheme of ‘reasoned decisionmaking.' … Not only must an agency’s decreed result be within the scope of its lawful authority, but the process by which it reaches that result must be logical and rational. Courts enforce this principle with regularity when they set aside agency regulations which, though well within the agencies’ scope of authority, are not supported by the reasons that the agencies adduce.” J. Scalia, Allentown Mack Sales and Service, Inc. v. NLRB, 522 U.S. 359, 374 (1998).