Can an ex president run again for US president?
Twenty-second Amendment to the United States Constitution
The Twenty-second Amendment (Amendment XXII) to the United States Constitution sets a limit on the number of times an individual is eligible for election to the office of President of the United States, and also sets additional eligibility conditions for presidents who succeed to the unexpired terms of their predecessors.[1]
List of former Philippines presidents who pursued public office
Since the adoption of the 1987 Constitution, a former president may not run for the office unless s/he has served more than 4 years; the previous 1973 constitution provided no limit while the 1935 constitution provided only one reelection. The term limit has prevented any incumbent president to run again for office; one exception was Gloria Macapagal-Arroyo, who has served for 3 and a half years prior to her election in 2004.