The United States supreme court is the only court with original jurisdiction of all states. The United States supreme court is a trial court.

Federal trial courts are the United States District Courts.

In the United States, the federal court system includes district courts, courts of appeals, and the Supreme Court. Each state has at least one district court, which is the lowest level of the federal court system. Courts of appeals hear appeals from the district courts, and the Supreme Court is the highest court in the federal system, hearing cases from the courts of appeals or state supreme courts.

There is only one court in the United States that has jurisdiction when one state sues another. The court that has jurisdiction in this process is the United States Supreme Court.

In the United States that power comes from the individual state constitutions and from the United States Constitution.