Speaker of the United States House of Representatives by the President "pro tempore" of the Senate and by the heads of federal executive departments. To date, the implementation of the Presidential Succession Act has never been necessary and no Speaker has ever acted as President. Implementation of the law almost became necessary in 1973 after the resignation of Vice President Spiro Agnew. At the time, many believed that President Richard Nixon would resign because of the Watergate scandal, allowing Speaker Carl Albert to succeed to the Presidency. However, before he resigned, Nixon appointed Gerald Ford as Vice President in accordance with the Twenty-fifth Amendment. Nevertheless, the United States
Spiro Agnew bolstering Nixon's support in suburbs nationally. Had Nixon lost those five states, he would have had only the minimum number of electoral votes needed, 270, and any defection by an elector would have thrown the election to the Democrat-controlled House of Representatives. Immediately after the 1968 election, Agnew was still uncertain what Nixon would expect of him as vice president. He met with Nixon several days after the election in Key Biscayne, Florida. Nixon, vice president himself for eight years under Eisenhower, wanted to spare Agnew the boredom and lack of a role he had sometimes experienced in that office.