In the U.S. federal judicial system, the United States is divided into 94 judicial districts. Each state has at least one judicial district, as do the District of Columbia and Puerto Rico.
Each judicial district contains a United States district court with a bankruptcy court under its authority. There is also a United States Attorney in each district, who acts as the federal government's lawyer in the district, both prosecuting federal criminal cases and defending the government (and its employees) in civil suits against them; the U.S. Attorney is not employed by the judicial branch but by the Department of Justice, part of the executive branch. There is also a Federal Public Defender who represents people charged with federal crimes who cannot afford to hire their own lawyers; some FPDs cover more than one judicial district. Each district also has a United States Marshal who serves the court system.
