As a thumbnail summary of EPA greenhouse gas (GHG) activity, in the wake of the U.S. Supreme Court’s decision in Massachusetts v. EPA, 549 U.S. 497 (2007), on December 7, 2009, EPA issued an Endangerment Finding, and a Cause or Contribute Finding pursuant to the Clean Air Act (CAA) 202(a), to support EPA’s promulgation of its GHG Emission Standards for Light-Duty Vehicles, which was finalized on April 1, 2010.

Article authored by McAffee & Taft Attorney: Mary Ellen Ternes.