Changes the dates on which the terms of the president and vice president, and of members of Congress, begin and end, to January 20 and January 3 respectively. States that if the president-elect dies before taking office, the vice president–elect is to be inaugurated as president. Proposed March 2, 1932; ratified January 23, 1933, 10 months later. The Twentieth Amendment to the United States Constitution moved the beginning and ending of the terms of the president and vice president from March 4 to January 20, and of members of Congress from March 4 to January 3. It also has provisions that determine what is to be done when there is no president-elect. The Twentieth Amendment was adopted on January 23, 1933. Wiki link