What were the constitutional changes to the presidency?

There have been several:

1.The 12th Amendment requiring separate ballots for the office of the presidency and the vice-presidency (1804).

2.The 20th Amendment which transferred the Presidential Inauguration from March to January (1933).

3.The 22nd Amendment, limiting the Presidency to two terms (1947).

4.The 25th Amendment that established a series of procedures to ensure the continuation of the presidency in the event the President is disabled or the Vice-President is absent (1967).

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