28 U.S.C. § 132 — Creation and composition of district courts

(a) Every judicial district has its own district court. It's officially called the United States District Court for that district, and it's a court of record. (b) The court is made up of the district judge or judges assigned to that district who are in regular active service. Judges who are designated or assigned to help out are also allowed to sit as judges of that court. (c) Unless a law, or a court rule or order, says otherwise, a single judge can exercise the district court's judicial power over any action, suit, or proceeding. That judge may preside alone and hold a regular or special court session at the same time other judges are holding their own sessions.