The impeachment process against Richard Nixon began in the United States House of Representatives on October 30, 1973, following the series of high-level resignations and firings widely called the "Saturday Night Massacre" during the course of the Watergate scandal.
The House Committee on the Judiciary set up an impeachment inquiry staff and began investigations into possible impeachable offenses by Richard Nixon, the 37th president of the United States. The process was formally initiated on February 6, 1974, when the House granted the Judiciary Committee authority to investigate whether sufficient grounds existed to impeach Nixon of high crimes and misdemeanors under Article II, Section 4, of the United States Constitution. This investigation was undertaken one year after the United States Senate established the Select Committee on Presidential Campaign Activities to investigate the break-in at the Democratic National Committee headquarters at the Watergate office complex during the 1972 presidential election, and the Republican Nixon administration's attempted cover-up of its involvement; during those hearings the scope of the scandal became apparent and the existence of the Nixon White House tapes was revealed.
Following an April 1974 subpoena from the Judiciary Committee, edited transcripts of 42 taped White House conversations relevant to the Watergate cover-up were finally made public by Nixon. However, the committee pressed for the audio tapes themselves, and subsequently issued subpoenas for additional tapes, all of which Nixon had refused. That same month, Nixon also refused to comply with a subpoena from special prosecutor Leon Jaworski for 64 Watergate-related tapes. Ultimately, on July 24, 1974, the United States Supreme Court issued a unanimous decision against Nixon, which ordered him to comply.
On May 9, 1974, formal hearings in the impeachment inquiry of Nixon began, culminating July 27–30, 1974, when members of the Democratic-led Judiciary Committee eventually approved three articles of impeachment. These articles charged Nixon with: 1) obstruction of justice in attempting to impede the investigation of the Watergate break-in, protect those responsible, and conceal the existence of other illegal activities; 2) abuse of power by using the office of the presidency on multiple occasions, dating back to the first year of his administration (1969), to unlawfully use federal agencies, such as the Internal Revenue Service and the Federal Bureau of Investigation, as well as establishing a covert White House special investigative unit, to violate the constitutional rights of citizens and interfere with lawful investigations; and 3) contempt of Congress by refusing to comply with congressional subpoenas. These articles were reported to the House of Representatives for final action, with 7 of the committee's 17 Republicans joining all 21 of its Democrats in voting in favor of one or more of the articles. Two other articles were debated in committee but were rejected. Based on the strength of the evidence presented and the bipartisan support for the articles in committee, House leaders of both political parties concluded that Nixon's impeachment by the full House was a certainty if it reached the House floor for a final vote, and that his conviction in a Senate trial was a distinct possibility.
On August 5, 1974, Nixon released a transcript of one of the additional conversations to the public, known as the "smoking gun" tape, which made clear his complicity in the Watergate cover-up. This disclosure destroyed Nixon politically. His most loyal defenders in Congress announced they would vote to impeach and convict Nixon for obstructing justice. Republican congressional leaders met with Nixon and told him that his impeachment and removal were all but certain. Thereupon, Nixon gave up the struggle to remain in office, resigning the presidency on August 9, 1974, before the full House could vote on the articles of impeachment. Although arrangements for a final House vote along with a Senate trial were being made at the time, further formal action was rendered unnecessary by his resignation, so the House brought the impeachment process against him to an official close two weeks later.
Nixon was the fourth U.S. president in over a century, since John Tyler in 1843, James Buchanan in 1860, and Andrew Johnson in 1868, to be the subject of formal impeachment investigations in the House of Representatives and both Bill Clinton and Donald Trump have undergone similar proceedings. Johnson, Clinton and Trump were actually impeached but then acquitted at the Senate trial, with Trump being the only president to be impeached and acquitted twice, while Tyler and Nixon almost got impeached, and Buchanan himself was not impeached, nor there could be any formal impeachment proposal against him. And while Nixon himself was not impeached, the impeachment process against him is so far the only one to cause a president's departure from office.
