The Twenty-second Amendment (Amendment XXII) of the United States Constitution limits the number of times one can be elected to the office of President of the United States. Congress proposed the amendment by two-thirds of both the House and Senate on March 21, 1947. Ratification by the requisite 36 of the then-48 states was completed on February 27, 1951.
Section 1. 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. But this article shall not apply to any person holding the office of President when this article was proposed by the Congress, and shall not prevent any person who may be holding the office of President, or acting as President, during the term within which this article becomes operative from holding the office of President or acting as President during the remainder of such term.
Section 2. This article shall be inoperative unless it shall have been ratified as an amendment to the Constitution by the legislatures of three-fourths of the several states within seven years from the date of its submission to the states by the Congress.
Although the Twenty-second Amendment was clearly a reaction to Franklin D. Roosevelt's service as President for an unprecedented four terms, the notion of presidential term limits has long-standing roots in American politics. The Constitutional Convention of 1787 considered the issue extensively, although it ultimately declined to restrict the amount of time a person could serve as president. But following George Washington's decision to retire after his second elected term, numerous public figures subsequently argued he had established a "two-term tradition" that served as a vital check against any one person, or the presidency as a whole, accumulating too much power.
In his Farewell Address, written near the end of his second term, Washington both reveals he considered not standing for reelection in 1792, and that his decision not to seek a third term in 1796 was due to age, not intention to set precedent. Eleven years later, Thomas Jefferson further contributed to the convention of a voluntary two-term limit when he wrote in 1807, "if some termination to the services of the chief Magistrate be not fixed by the Constitution, or supplied by practice, his office, nominally four years, will in fact become for life." Three of the next four presidents after Jefferson—James Madison, James Monroe, and Andrew Jackson—served two terms, and each one adhered to the two-term principle.