The case established the basic legal framework for judicial review of the actions of administrative agencies. Decided March 2, 1971 (argued January 11, 1971). Opinion of the Court: Thurgood Marshall → go there Dissenting: Black. Topic: Administrative law. Citizens to Preserve Overton Park v. Volpe, 401 U.S. 402 (1971), is a landmark decision by the Supreme Court of the United States that established the basic legal framework for judicial review of the actions of administrative agencies. It substantially narrowed the Administrative Procedure Act's Section 701(a)(2) exception from judicial review. It also stands as a notable example of the power of litigation by grassroots citizen movements to block government action. Wiki link