What is the highest court in the United States?

The Supreme Court is the highest court in the United States, serving as the final arbiter of the law and having the ultimate authority in interpreting the Constitution. Established under Article III of the Constitution, the Supreme Court has the power to review decisions made by lower courts and to ensure that laws comply with constitutional principles. Its rulings set binding precedents that must be followed by all other courts in the country.

While the District Courts handle general federal trial cases and the Appeals Courts review decisions from these courts, they do not have the same level of authority as the Supreme Court. The Circuit Courts, which are part of the federal judicial system, primarily serve as trial courts and intermediate appellate courts but do not have the same national significance as the Supreme Court. Thus, the Supreme Court's role as the top-level court in the judicial hierarchy firmly establishes it as the definitive interpreter of federal law and the Constitution.