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.
2018 Mexican general election
The incumbent president Enrique Peña Nieto was not constitutionally eligible for a second term. Incumbent members of the legislature are term-limited, thus all members of Congress will be newly elected. As a consequence of the political reform of 2014, the members of the legislature elected in this election will be the first allowed to run for reelection in subsequent elections. The National Electoral Institute (INE) officially declared the new process underway on 8 September 2017.