Federal Judicial Center background The U.S. Constitution establishes a federal system of government. The constitution gives specific powers to the federal (national) government. All power not delegated to the federal government remains with the states. Each of the 50 states has its own state constitution, governmental structure, legal codes, and judiciary. The U.S. Constitution establishes the judicial branch of the federal government and specifies the authority of the federal courts. Federal courts have exclusive jurisdiction only over certain types of cases, such as cases involving federal laws, controversies between states, and cases involving foreign governments. In certain other areas federal courts share jurisdiction with state courts. For example, both federal and state courts may decide cases involving parties who live in different states. State courts have exclusive jurisdiction over the vast majority of cases. Parties have a right to trial by jury in all criminal and most civil cases. A jury usually consists of a panel of 12 citizens who hear the evidence and apply the law stated by the judge to reach a decision based on the facts as the jury has determined them from the evidence at trial. However, most legal disputes in the United States are resolved before a case reaches a jury. They are resolved by legal motion or settlement, not by trial.
structure of the f e d e ra l co u rt s yst e m
The U.S. Constitution establishes the U.S. Supreme Court and gives Congress the authority to establish the lower federal courts. Congress has established two levels of federal courts below the Supreme Court: the U.S. district courts and the U.S. circuit courts of appeals. U.S. district courts are the courts of first instance in the federal system. There are 94 such district courts throughout the nation. At least one district court is located in each state. District judges sit individually to hear