The Utility Air Regulatory Group, ARIPPA, the Environmental Committee of the Florida Electric Power Coordinating Group Inc., the National Rural Electric Cooperative Association, Entergy Corp., Southwestern Public Service Co., and Southern Co. filed petitions for review in the U.S. Court of Appeals for the District of Columbia Circuit last week challenging an Environmental Protection Agency final rule that revises emissions budgets for 13 states under the Cross-State Air Pollution Rule. The rule is being challenged in the D.C. Circuit, and the court has stayed the regulation while legal challenges continue; a decision is expected soon.