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.
United States presidential transition
The Presidential Transition Act of 1963 , as amended (by the Presidential Transitions Effectiveness Act of 1998 , Presidential Transition Act of 2000 , and Presidential Transitions Improvements Act of 2015 ), established formal mechanisms to facilitate presidential transitions. Specifically, the act directs the Administrator of General Services to provide facilities, funding of approximately five million dollars, access to government services, and support for a transition team, and to provide training and orientation of new government personnel and other procedures to ensure an orderly transition.