The Supreme Court ruled 6-3 to overturn the 1984 decision in Chevron v. Natural Resources Defense Council. As Chief Justice John Roberts explained, Chevron “defies the command” of the Administrative Procedure Act. It’s the reviewing court, not the agency being reviewed, that must “decide all relevant questions of law and interpret … statutory provisions.”

Chief Justice John Roberts wrote the Court’s decision, joined by Justices Clarence Thomas, Samuel Alito, Neil Gorsuch, Brett Kavanaugh, and Amy Barrett. Thomas and Gorsuch also filed concurring opinions. Justice Elena Kagan wrote in dissent, joined by Justices Sonia Sotomayor and Justice Ketanji Jackson.