The United States Court of Appeals for the District of Columbia Circuit is one of the thirteen United States Courts of Appeals. It has the smallest geographical jurisdiction of any of the U.S. courts of appeals, and it covers only the U.S. District Court for the District of Columbia. It meets at the E. Barrett Prettyman United States Courthouse in Washington, DC.
The D.C. Circuit is often considered to be second only to the U.S. From Wikipedia