of the senate and thedeclaration that he is unable to discharge theand until he transmits to them a written…

of the senate and thedeclaration that he is unable to discharge theand until he transmits to them a written declaration to the contrary,powers and duties shall be discharged by the vice president as acting president.section 4. whenever the vice president and a majority of either the principal officers of theexecutive departments or of such other body as congress may by law provide, transmit to thepresident pro tempore of the senate and the speaker of the house of representatives their writtendeclaration that the president is unable to discharge the powers and duties of his office, the vicepresident shall immediately assume the powers and duties of the office as acting president.thereafter, when the president transmits to the president pro tempore of the senate and the speakerof the house of representatives his written declaration that no inability exists, he shall resume thepowers and duties of his office unless the vice president and a majority of either the principal officersof the executive department or of such other body as congress may by law provide, transmit withinfour days to the president pro tempore of the senate and the speaker of the house ofrepresentatives their written declaration that the president is unable to discharge the powers andduties of his office. thereupon congress shall decide the issue, assembling within forty-eight hours forthat purpose if not in session. if the congress, within twenty-one days after receipt of the latter writtendeclaration, or, if congress is not in session, within twenty-one days after congress is required toassemble, determines by two-thirds vote of both houses that the president is unable to discharge thepowers and duties of his office, the vice president shall continue to discharge the same as actingpresident; otherwise, the president shall resume the powers and duties of his office.section 1 summaryif the president cant fulfill his duty as president thenhe will be replaced by vice-presidentsection 2 summaryboth houses will vote on a vice-president since the currentvice-president will step up and replace the president.section 3 summaryif the president voices that he cant ful-fill his role then until hecan the vice-president will take his placesection 4 summary
Answer
Brief Explanations:
This summarizes the formal process for the Vice President to become Acting President when the President is declared unable to serve, plus the steps for the President to attempt resuming office and Congress's final voting role to resolve disputes over the President's ability to serve.
Answer:
If the Vice President and a majority of top executive officials (or a body Congress designates) declare the President unable to serve, the Vice President immediately becomes Acting President. If the President later declares they are able to resume, they will do so—unless the Vice President and the relevant group re-declare the President's inability within 4 days. Congress then convenes within 48 hours to vote; a two-thirds majority in both chambers is needed to keep the Vice President as Acting President, otherwise the President resumes their full powers and duties.