The 22nd Amendment has already had its say: “No person shall be elected to the office of the President more than twice, and no person who has held the office of President, or acted as President, for more than two years of a term to which some other person was elected President shall be elected to the office of the President more than once.”

The 22nd Amendment limits U.S. presidents to two terms in office, but that hasn't stopped President Trump and his supporters from raising the idea of a third term. Josh Chafetz, professor of law and politics at Georgetown University Law Center,