California's ability to set its own vehicle emission standards under its Clean Air Act waiver of federal preemption is in jeopardy given three joint congressional resolutions signed into law by President Trump on June 12,...more
On Monday, January 13, 2025, California withdrew requests for Clean Air Act waivers from the U.S. Environmental Protection Agency (EPA) needed to support four recently adopted vehicle emissions regulations: 1) the Advanced...more
In a significant development for environmental law and state autonomy, the Supreme Court of the United States (SCOTUS) recently declined to review whether the U.S. Environmental Protection Agency (EPA) has the authority to...more
While a dispute over the Clean Air Act’s (CAAs) venue provision may seem arcane, a forthcoming US Supreme Court decision will affect core principles of the separation of powers and constitutional due process in ways that may...more
EPA Proposes Removing Affirmative Defense Provisions from Eighteen Clean Air Act Emission Standards - In a proposed rule published on June 24, 2024, EPA has proposed to remove eighteen affirmative defense provisions for...more
Last week, in a 5-4 opinion, in Ohio v. Environmental Protection Agency, the U.S. Supreme Court granted applications for a stay of the implementation of the “Good Neighbor” Plan, the EPA’s federal emissions reduction rule,...more
In June 2022, the Supreme Court issued its decision in West Virginia v. EPA, which held that, under the “major questions doctrine,” the EPA lacked the authority under the Clean Air Act to devise emissions caps based on the...more
West Virginia v. EPA, No. 20-1530; North American Coal Corp. v. EPA, No. 20-1531; Westmoreland Mining Holdings v. EPA, No. 20-1778; North Dakota v. EPA, No. 20-1780: In four consolidated cases, the Court agreed to review the...more
On February 9, 2016, in an historic and unprecedented decision, the U.S. Supreme Court blocked the U.S. Environmental Protection Agency (“EPA”) from implementing the Clean Power Plan (“CPP”) while the rule is challenged in...more