The Supreme Court is the only federal court that is explicitly established by the Constitution. During the Constitutional Convention, a proposal was made for the Supreme Court to be the only federal court, having both original jurisdiction and appellate jurisdiction. This proposal was rejected in favor of the provision that exists today. Under this provision, the Congress may create inferior (i.e., lower) courts under both Article III, Section 1, and Article I, Section 8. The Article III courts, which are also known as "constitutional courts", were first created by the Judiciary Act of 1789, and are the only courts with judicial power. Article I courts, which are also known as "legislative courts", consist of regulatory agencies, such as the United States Tax Court.