https://en.wikipedia.org/wiki/United_States_v._Nixon

United States v. Nixon, 418 U.S. 683 (1974), was a landmark United States Supreme Court case that resulted in a unanimous decision against President Richard Nixon, ordering him to deliver tape recordings and other subpoenaed materials to a federal district court. Issued on July 24, 1974, the decision was important to the late stages of the Watergate scandal, when there was an ongoing impeachment process against Richard Nixon. United States v. Nixon is considered a crucial precedent limiting the power of any U.S. president to claim executive privilege.

Chief Justice Warren E. Burger wrote the opinion for a unanimous court, joined by Justices William O. Douglas, William J. Brennan, Potter Stewart, Byron White, Thurgood Marshall, Harry Blackmun and Lewis F. Powell. Burger, Blackmun, and Powell were appointed to the Court by Nixon during his first term. Associate Justice William Rehnquist recused himself as he had previously served in the Nixon administration as an Assistant Attorney General.

Summary
The case arose out of the Watergate scandal, which began during the 1972 Presidential campaign between Democratic Senator George McGovern of South Dakota and President Nixon. On June 17, 1972, about five months before the general election, five burglars broke into Democratic headquarters located in the Watergate building complex in Washington, D.C.

In May 1973, Nixon's Attorney General, Elliot Richardson, appointed Archibald Cox to the position of special prosecutor, charged with investigating the break-in. In October 1973, Nixon arranged to have Cox fired in the Saturday Night Massacre. Nonetheless, public outrage forced Nixon to appoint a new special prosecutor, Leon Jaworski, who was charged with conducting the Watergate investigation for the government.

In April 1974, Jaworski obtained a subpoena ordering Nixon to release certain tapes and papers related to specific meetings between the President and those indicted by the grand jury. Those tapes and the conversations they revealed were believed to contain damaging evidence involving the indicted men and perhaps the President himself.

Hoping that Jaworski and the public would be satisfied, Nixon turned over edited transcripts of 43 conversations, including portions of 20 conversations demanded by the subpoena. James D. St. Clair, Nixon's attorney, then requested Judge John Sirica of the U.S. District Court for the District of Columbia to quash the subpoena. While arguing before Sirica, St. Clair stated that:

The President wants me to argue that he is as powerful a monarch as Louis XIV, only four years at a time, and is not subject to the processes of any court in the land except the court of impeachment.

Sirica denied Nixon's motion and ordered the President to turn the tapes over by May 31. Both Nixon and Jaworski appealed directly to the Supreme Court, which heard arguments on July 8. Nixon's attorney argued the matter should not be subject to "judicial resolution" since the matter was a dispute within the executive branch and the branch should resolve the dispute itself. Also, he claimed Special Prosecutor Jaworski had not proven the requested materials were absolutely necessary for the trial of the seven men. Besides, he claimed Nixon had an absolute executive privilege to protect communications between "high Government officials and those who advise and assist them in carrying out their duties."

Decision
Less than three weeks after oral arguments, the Court issued its decision.

Within the court, there was never much doubt about the general outcome, July 9, the day following oral arguments, all eight justices (Justice William H. Rehnquist recused himself due to his close association with several Watergate conspirators, including Attorneys General John Mitchell and Richard Kleindienst, prior to his appointment to the Court) indicated to each other that they would rule against the president. The justices struggled to settle on an opinion that all eight could agree to, however, with the major issue being how much of a constitutional standard could be established for what executive privilege did mean.

Burger's first draft was deemed problematic and insufficient by the rest of the court, leading the other Justices to criticize and re-write major parts of the draft. The final draft would eventually heavily incorporate Justice Blackmun's re-writing of Facts of the Case, Justice Douglas' appealability section, Justice Brennan's thoughts on standing, Justice White's standards on admissibility and relevance, and Justices Powell and Stewart's interpretation of the executive privilege.

The stakes were so high, in that the tapes most likely contained evidence of criminal wrongdoing by the President and his men, that they wanted no dissent. Despite the Chief Justice's hostility to allowing the other Justices to participate in the drafting of the opinion, the final version was agreed to on July 23, the day before the decision was announced, and would contain the work of all the Justices. Chief Justice Burger delivered the decision from the bench and the very fact that he was doing so meant that knowledgeable onlookers realized the decision must be unanimous.

The Court's opinion found that the courts could indeed intervene on the matter and that Special Counsel Jaworski had proven a "sufficient likelihood that each of the tapes contains conversations relevant to the offenses charged in the indictment". While the Court acknowledged that the principle of executive privilege did exist, the Court would also directly reject President Nixon's claim to an "absolute, unqualified Presidential privilege of immunity from judicial process under all circumstances."

The Court held that a claim of Presidential privilege as to materials subpoenaed for use in a criminal trial cannot override the needs of the judicial process if that claim is based, not on the ground that military or diplomatic secrets are implicated, but merely on the ground of a generalized interest in confidentiality. Nixon was then ordered to deliver the subpoenaed materials to the District Court.

Nixon resigned sixteen days later, on August 9, 1974.

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