U.S. Constitution, Twenty-Fifth Amendment, 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.
Notes
Allows the President to transmit a written declaration to the President pro tempore of the Senate and the Speaker of the House that the President is unable to discharge the office. Requires the Vice President to act as President until the President transmits a written declaration to the contrary.
Use as reference
Lexinter.net | U.S. Const. amend. XXV, § 3 | https://laws.lexinter.net/constitution/us/amendment-25/section-3