In early February of 2016, the U.S. Supreme Court granted a stay of the Environmental Protection Agency’s (EPA) Clean Power Plan (CPP), freezing the rule’s implementation until final review by the courts. In response to petitions from more than two dozen states and many industry groups, this was the Supreme Court’s first stay of an administrative rule reversing the D.C. Circuit’s earlier denial. Full judicial review on the merits has begun before the U.S. Court of Appeals for the D.C. Circuit. Oral arguments are to be held on September 27.