On April 11, 1974, the House Judiciary Committee subpoenaed the tapes of 42 White House conversations.[34] Later that month, Nixon released more than 1,200 pages of edited transcripts of the subpoenaed tapes, but refused to turn over the actual tapes, claiming executive privilege once more.[35] The Judiciary Committee, however, rejected Nixon's edited transcripts, saying that they did not comply with the subpoena.[36]
Sirica, acting on a request from Jaworski, issued a subpoena for the tapes of 64 presidential conversations to use as evidence in the criminal cases against indicted former Nixon administration officials. Nixon refused, and Jaworski appealed to the U.S. Supreme Court to force Nixon to turn over the tapes. On July 24, 1974, the Supreme Court ordered Nixon to release the tapes.[37] The 8–0 ruling (Justice William Rehnquist recused himself owing to having worked for Attorney General John Mitchell)[37] in United States v. Nixon found that President Nixon was wrong in arguing that courts are compelled to honor, without question, any presidential claim of executive privilege.[37]