The correct answer is The 25th Amendment sets the order of Presidential succession.
The 25th Amendment was adopted by Congress in 1967 to define presidential succession in emergencies, as a direct result of the assassination of President John Fitzgerald Kennedy in November 1963. In the hours after the attack, there was confusion about the severity of the injuries that ended up killing the president in Dallas. Under the amendment, the president may declare himself incapacitated or be declared as such by the vice president, provided that he, together with most cabinet members - eight ministers, determines that there is physical or mental disability. In this case, the vice president immediately takes over. But the amendment gives the president the right to resist removal by asking the two houses of Congress to vote. If the legislature does not confirm, by two-thirds of the vote, the president's incapacity, he can resume his post.
