USA HISTORY

Detailed explanation-1: -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.

Detailed explanation-2: -A detailed history of the Nixon White House Tapes from their installation in 1971 to when the National Archives took possession in 1977. On February 16, 1971 the United States Secret Service (USSS), at the request of President Nixon, installed recording devices in the White House.