The Supreme Court announced June 24 that it would review a 2-1 ruling by the U.S. Court of Appeals for the District of Columbia Circuit that struck down the Environmental Protection Agency’s Cross State Air Pollution Rule in EME Homer City Generation, L.P. v. EPA. The court ruled that the agency had stretched its authority in an effort to limit air pollution. The rule would reduce emissions from coal-fired power plants across 28 states that drift into downwind states.