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 indicted and met with Speaker of the House Carl Albert on September 25, asking for an investigation. He cited as precedent an 1826 House investigation of Vice President John C. Calhoun, who was alleged to have taken improper payments while a cabinet member. Albert, second in line to the presidency under Agnew, responded that it would be improper for the House to act in a matter before the courts. Agnew also filed a motion to block any indictment on the grounds that he had been prejudiced by improper leaks from the Justice Department, and tried to rally public opinion, giving