The district courts are considered the workhorses of the federal judiciary system because they handle the bulk of federal lawsuits. In the United States, the Judiciary Act of 1789 of the Constitution mandated the creation of 13 district courts, with each court chaired by a district judge. District court judges are designated by the U.S. President and confirmed by the Senate.
Along with the 13 district courts, the U.S. federal judicial system consists of a Supreme Court and three circuit courts, also known as the courts of appeals. District courts dispense justice regarding issues of legalities, civil infractions and criminal violations. These courts also supervise the documentation of filed and dismissed cases.