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.
Twentieth Amendment to the United States Constitution
of the Constitution states that Congress must meet at least once per year, on the first Monday in December, though Congress could by law set another date and the president could summon special sessions. The original text of the Constitution set a duration for the terms of federal elected officials, but not the specific dates on which those terms would begin or end.