This week the OMA joined more than 160 business groups throughout the country in filing an amicus brief in the U.S. Court of Appeals for the D.C. Circuit in support of a lawsuit by states and industry to overturn U.S. EPA’s “Clean Power Plan.” The brief outlines major legal and economic concerns with the rule, arguing that U.S. EPA trampled the rights of states to determine their own energy mix and implement environmental standards in a manner tailored to their own circumstances. The court is likely to issue a decision later this year.  From there, the challenge is expected to make its way to the U.S. Supreme Court, which previously issued a stay to halt all implementation and enforcement actions on the rule until it has the opportunity to hear the case.