 Speaker Johnson said on Friday, quote, I would ask the cabinet members to search their hearts. The 25th Amendment to the Constitution, which governs presidential succession, says that the vice president and most of the cabinet may vote to declare a president, quote, unable to discharge the power and the duties of his office and give the vice president the duties of acting president. A dispute from the president about his capacity to perform the job would send the question to Congress, which could then decide to give the vice president the powers of acting president by a two-thirds vote of both the House and the Senate.