Case Law Index
federal2007
Additional Highlights:Environmental LawAdministrative LawStanding
Massachusetts v. Environmental Protection Agency
United States Supreme Court
Key Holding
Massachusetts has standing to challenge the EPA's refusal to regulate greenhouse gas emissions, and the EPA has authority under the Clean Air Act to regulate such emissions from new motor vehicles.
Case Summary
Massachusetts v. EPA held that the EPA had statutory authority to regulate greenhouse gas emissions under the Clean Air Act and that it had improperly denied a petition to regulate such emissions from motor vehicles, opening the door to federal climate regulation.