Still unclear?-----Twenty-fifth Amendment to the United States Constitution - Wikipedia

Twenty-fifth Amendment to the United States Constitution - Wikipedia

• Section 3: President's declaration of inability[edit]
• Section 3. Whenever the President transmits to the President pro tempore of the Senate and the Speaker of the House of Representatives his written declaration that he is unable to discharge the powers and duties of his office, and until he transmits to them a written declaration to the contrary, such powers and duties shall be discharged by the Vice President as Acting President.
• Section 3 allows for the voluntary transfer of presidential authority to the vice president (for example, in anticipation of a medical procedure) by the president declaring in writing to be unable to discharge the powers and duties of the presidency. The vice president then assumes those powers and duties as acting president;[note 1] the vice president does not become president and the president remains in office, although without authority. The president regains those powers and duties upon declaring, in writing, to be again able to discharge them.[3]: 112-3