The United States attorney for the District of Columbia (USADC) is responsible for representing the federal government in the United States District Court for the District of Columbia. The U.S. Attorney's Office for the District of Columbia has two divisions, the Civil Division and the Criminal Division. The Civil Division is responsible for representing federal agencies in the U.S. District Court for the District of Columbia and in appeals before the U.S. Court of Appeals for the District of Columbia Circuit.

The United States District Court for the District of Columbia is a federal district court in Washington, D.C. Along with the United States District Court for the District of Hawaii and the High Court of American Samoa, it also sometimes handles federal issues that arise in the territory of American Samoa, which has no local federal court or territorial court.