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 themselves became their party's nominee for president. Some recent historians have seen Agnew as important in the development of the New Right, arguing that he should be honored alongside the acknowledged founding fathers of the movement such as Goldwater and Reagan; Victor Gold, Agnew's former press secretary, considered him the movement's "John the Baptist". Goldwater's crusade in 1964, at the height of Johnsonian liberalism, came too early, but by the time of Agnew's election, liberalism was on the wane, and as Agnew moved to the right after 1968, the country moved with him. Agnew's fall shocked and saddened conservatives, but