Litigation
Ohio v. EPA
About this case
Documents
Filing Date
Type
Action Taken
Document
Summary
12/16/2024
Decision
Petition for writ of certiorari denied.
The U.S. Supreme Court denied Ohio and 16 other states’ petition for writ of certiorari seeking review of the D.C. Circuit’s decision upholding the U.S. Environmental Protection Agency’s (EPA’s) grant of a preemption waiver for California’s Advanced Clean Car Program regulations. The question presented by the petition concerned congressional authority to give EPA the authority to waive preemption of California vehicle emissions standards. Justice Thomas would have granted the petition.
07/05/2024
Petition For Writ Of Certiorari
Petition for writ of certiorari filed.
Ohio and 16 other states filed a petition for writ of certiorari in the U.S. Supreme Court seeking review of the D.C. Circuit’s decision upholding EPA’s grant of a preemption waiver to California for its Advanced Clean Car Program regulations. The states’ petition presented the question of whether Congress “[m]ay … pass a law under the Commerce Clause that empowers one State to exercise sovereign power that the law denies to all other States.” Entities in the liquid fuels business also filed a petition for writ of certiorari.
Summary
Challenge to EPA's reinstatement of the waiver allowing California to regulate greenhouse gas emissions from motor vehicles.