President-elect of the United States the 25th Amendment. The first instance was in 1973, when Gerald Ford was nominated by President Richard Nixon to succeed Spiro Agnew, who had resigned. The second came in 1974, when Ford, who had succeeded to the presidency following Nixon's resignation, nominated Nelson Rockefeller to succeed him. During both vacancies, the nominee was called Vice President-designate, instead of Vice President-elect, as neither had been elected to the office. As a result of these events, the nation has had two more Vice Presidents than it has had Vice President-elects. While he is currently the 48th U.S. Vice President, Mike Pence was
President of the United States from office has never occurred. The Constitution, in , stipulates that the vice president takes over the "powers and duties" of the presidency in the event of a president's removal, death, resignation, or inability. Even so, it does not clearly state whether the vice president would become President of the United States or simply act as president in a case of succession. This ambiguity was alleviated in 1967 by , which unequivocally states that the vice president becomes president upon the removal from office, death, or resignation of the president. Under , the president may transfer the presidential powers and