Vice President of the United States the Twenty-fifth Amendment established a procedure for filling such a vacancy: This procedure has been implemented twice since the amendment came into force. The first instance occurred in 1973 following the October 10 resignation of Spiro Agnew, when Gerald Ford was nominated by President Richard Nixon and confirmed by Congress. The second occurred 10 months later following Ford's August 9, 1974 accession to the presidency upon Nixon's resignation, when Nelson Rockefeller was nominated by President Ford and confirmed by Congress. Had it not been for this new constitutional mechanism, the vice presidency would have remained vacant after Agnew's resignation and
Oath of office of the Vice President of the United States the outgoing Vice President (last in 1945) 12 times, an Associate Justice of the Supreme Court of the United States (last in 2017) 9 times, the Chief Justice of the United States (last in 2001) 6 times, U.S. Senators that are not President Pro Tempore of the Senate (last in 1969) 5 times, the Speaker of the United States House of Representatives (last in 2005) 4 times, a US judge twice, and a US Consul once with one time being unrecorded. Former Chief Justice Warren E. Burger has given the oath the most times with three. Of the 59 times