The Supreme Court's decision in West Virginia v. EPA narrowed the breadth of powers the Environmental Protection Agency has to regulate carbon emissions under the Clean Air Act. Barry Rabe explains the court's reasoning, the uncertainties it raises for EPA regulation, and the challenges for congressional or state-level action. Full show notes and transcript: https://brook.gs/3OELI4T  Follow Brookings podcasts on Apple or Google podcasts, or on Spotify. Send feedback email to podcasts@brookings.edu and follow us and tweet us at @policypodcasts on Twitter. The Current is part of the Brookings Podcast Network.