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 unfit for the vice presidency two years later. The "Post" in particular had been hostile to Nixon since the Hiss case in the 1940s. Agnew accused the papers of sharing a narrow viewpoint alien to most Americans. Agnew alleged that the newspapers were trying to circumscribe his First Amendment right to speak of what he believed, while demanding unfettered freedom for themselves, and warned, "the day when the network commentators and even the gentlemen of "The New York Times" enjoyed a form of diplomatic immunity from comment and criticism of what they said is over." After Montgomery, Nixon sought a