The U.S. Supreme Court on Monday declined to overturn a $14.25 million civil penalty imposed on Exxon Mobil Corp for repeated violations of the Clean Air Act at its Baytown, Texas crude oil refinery. This penalty stems from a lawsuit dating back to 2010 regarding air pollution at the facility. Exxon Mobil had repeatedly appealed the penalty, but the Supreme Court rejected its bid to overturn the ruling. Additionally, the Supreme Court declined to review an Oklahoma law regulating pharmacy benefit managers (PBMs), effectively upholding an appeals court ruling that struck down key parts of the law. The court also refused to hear a power company's claim that federal law exempts a power plant on tribal land in Arizona from property taxes.