The Environmental Protection Agency only has limited authority to set caps on carbon emissions. Under the major questions doctrine, Congress is presumed not to delegate questions of vast economic and political significance to an agency except with clear statutory authorization. Decided June 30, 2022 (argued February 28, 2022). Opinion of the Court: John Roberts → go there Dissenting: Kagan. Topic: Administrative law. West Virginia v. Environmental Protection Agency, 597 U.S. 697 (2022), is a landmark decision of the U.S. Supreme Court relating to the Clean Air Act, and the extent to which the Environmental Protection Agency (EPA) can regulate carbon dioxide emissions related to climate change. Wiki link