Twenty-second Amendment to the United States Constitution
Some argue that the 22nd Amendment and 12th Amendment bar any two-term president from later serving as vice president as well as from succeeding to the presidency from any point in the presidential line of succession. Others contend that the original intent of the 12th Amendment concerns qualification for "service" (age, residence, and citizenship), while the 22nd Amendment, concerns qualifications for "election", and thus (strictly applying the text) a former two-term president is still eligible to "serve" as vice president (neither amendment restricts the number of times an individual can be elected to the vice presidency), and then succeed to the presidency to serve out the balance of the term (though prohibited from running for election to an additional term).
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.