The article that deals with the judicial branch of government is Article III of the U.S. Constitution. Article III establishes the judicial branch as one of the three separate branches of the federal government, outlining the powers and structure of the judiciary, including the Supreme Court and other federal courts. It guarantees the right to a fair trial and defines the jurisdiction and authority of federal courts. Judges in this branch are appointed by the President and confirmed by the Senate, and they serve for life, subject to impeachment and conviction. This article is fundamental in defining the role and operation of the judicial system in the United States.