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.
Powers of the President of Singapore
The original Article 22H of the Constitution provided the President with personal discretion to withhold assent to any bill (other than a bill to which Article 5(2A) applies) which provided directly or indirectly for the circumvention or curtailment of the discretionary powers conferred upon the President by the Constitution. At that time, Article 5(2A) provided that the President could prevent Parliament from passing a bill seeking to amend certain specified clauses of the Constitution, including those dealing with the President's powers, unless it had been supported by not less than two-thirds of the votes cast at a national referendum. However, as Article 5(2A) was not yet in force, a question arose as to whether the Government was entitled to amend the Constitution in a way that circumvented or curtailed the President's discretionary powers, or whether Article 22H prohibited this entirely.