Via Secrecy News: “Under the 25th amendment to the Constitution, a U.S. President could be declared “disabled” and removed from office against his will by the Vice President acting together with a majority of the Cabinet. A new report from the Congressional Research Service details the background and provisions of the amendment. Proponents of the 25th amendment insisted that it was “not intended to facilitate the removal of an unpopular or failed President,” and that safeguards were in place to prevent abuse.
While Presidents have voluntarily and temporarily declared themselves disabled on three occasions — in 1985, 2002 and 2007 — the provisions for involuntary removal from office have never been implemented. See Presidential Disability Under the Twenty-Fifth Amendment: Constitutional Provisions and Perspectives for Congress, November 5, 2018.”