(May 31, 2024, 11:55 AM EDT) -- WASHINGTON, D.C. — In their joint reply brief filed in the U.S. Supreme Court on May 30, Utah and Oklahoma argue that their case is a better vehicle to resolve the question of whether the District of Columbia Circuit U.S. Court of Appeals has exclusive jurisdiction over challenges to the Environmental Protection Agency’s decision to disapprove state implementation plans for new air quality standards under the Clean Air Act, as opposed to a separate petition filed in the high court by the EPA itself....