The 25th amendment to the U. S. Constitution was important in the 1970s because it

It was 180 years ago, in the closing days of the Constitutional Convention, that the Founding Fathers debated the question of Presidential disability ... Now, at last, the 25th amendment clarifies the crucial clause that provides for succession to the Presidency and for filling a Vice Presidential vacancy. also The 25th amendment allows for the Vice President to become president in the event of death, resignation, removal from office or impairment that prevents the current president from fulfilling his or her duties ... Among the more important provisions of the 25th amendment are the provisions for the "Acting President."