The Supreme Court was created in 1789 by Article III of the United States Constitution, which stipulates that the "judicial Power of the United States, shall be vested in one supreme Court" together with any lower courts Congress may establish. Congress organized the Court that year with the passage of the Judiciary Act of 1789. It specified the Court's original and appellate jurisdiction, created thirteen judicial districts, and fixed the number of justices at six (one chief justice and five associate justices).