Then comes Article 4, which has never been used. It stipulates how a vice president, together with a majority of the cabinet, can inform Congress that the president is unable to discharge the powers and duties of his office. Should that happen, the vice president becomes acting president.
Things get tricky, however, when the president disagrees that hes incapacitated, decides to fight to remain in office, and informs Congress that hes fit to serve. In that case, assuming they want to pursue the matter, the vice president and the majority of the cabinet have four days to tell Congress that the president is indeed unwell, and cant function in office.
Should that happen, Congress has 21 days after assembling to decide whether the president is well enough to discharge the duties of his office. A two-thirds majority in both houses is then required to remove the president and make the vice president the acting president.
