On March 20, the Pacific Legal Foundation, the Utility Air Regulatory Group, and the state of Virginia filed petitions with the Supreme Court challenging decisions by the U.S. Court of Appeals for the District of Columbia Circuit on Environment Protection Agency (EPA) greenhouse gas actions. The Pacific Legal Foundation and Virginia challenged a decision that maintains that the Clean Air Act allows the EPA to regulate greenhouse gases, while the Utility Air Regulatory Group challenged the EPA’s permitting program for large stationary sources of emissions.