<P> Article Three of the United States Constitution establishes the judicial branch of the federal government . The judicial branch comprises the Supreme Court of the United States and lower courts as created by Congress . </P> <P> Section 1 vests the judicial power of the United States in federal courts, requires a supreme court, allows inferior courts, requires good behavior tenure for judges, and prohibits decreasing the salaries of judges . </P> <P> The judicial Power of the United States, shall be vested in one supreme Court, and in such inferior Courts as the Congress may from time to time ordain and establish . The Judges, both of the supreme and inferior Courts, shall hold their Offices during good Behavior, and shall, at stated Times, receive for their Services a Compensation which shall not be diminished during their Continuance in Office . </P> <P> Article III authorizes one Supreme Court, but does not set the number of justices that must be appointed to it . Article I, Section 3, Clause 6 refers to a Chief Justice (who shall preside over the impeachment trial of a President). The number of justices is fixed by statute at nine: the one chief justice, and eight associate justices . </P>

Article iii section 2 clause 2 of the united states constitution