Twenty-second Amendment to the United States Constitution
The amendment prohibits any individual who has been elected president twice from being elected again. Under the amendment, an individual who fills an unexpired presidential term lasting greater than two years is also prohibited from winning election as president more than once. Scholars debate whether the amendment prohibits affected individuals from succeeding to the presidency under any circumstances or whether it only applies to presidential elections.
President of Chile
Under the 1828 constitution, the President served for four years, without the possibility of immediate reelection for one more term. In 1833, the presidential period was changed to five years, with a possibility of immediate reelection for one more term, limited to two consecutive terms. Then by a constitutional reform in 1878, possibility for reelection became disallowed. Under the 1925 constitution, the President served for a six-year term, without the possibility of immediate reelection only.
In the original text of the 1980 constitution, the President served for an eight-year term without the possibility of immediate reelection. Some transitory disposals, fixed during the government of the general Augusto Pinochet, allowed the exceptional possibility of his reelection in the 1988 plebiscite. Then, in the transition to democracy the 1989 referendum established a first transitional four-year presidential term (1990–1994), followed by common eight-year terms, without the possibility of immediate reelection. However, in 4 March 1994 (a week before Eduardo Frei Ruiz-Tagle took office) the presidential period was reduced to a six-year term, without an immediate reelection.