ChatGPT said:
If concerns arise about a U.S. president’s mental fitness, the primary mechanisms for removal are the 25th Amendment and impeachment.
25th Amendment
Section 4 of the 25th Amendment allows the Vice President and a majority of the Cabinet to declare the president unable to discharge the powers and duties of the office. Upon such a declaration, the Vice President assumes the role of Acting President. If the president contests this declaration, Congress must decide the issue, requiring a two-thirds majority in both the House and Senate to uphold the president’s removal.
Impeachment
The Constitution permits Congress to impeach and remove a president for “high crimes and misdemeanors.” The process begins in the House of Representatives, which can approve articles of impeachment by a simple majority. If passed, the Senate then conducts a trial, and a two-thirds majority is needed to convict and remove the president from office.
It’s important to note that these mechanisms are designed to address a president’s inability to perform duties or misconduct, not necessarily to assess mental health. Determining mental incapacity is complex and would likely involve both medical evaluations and political considerations.
Sources
4o