On the morning of December 21, 1970, Elvis Presley personally delivered a letter to the northwest gate of the White House. Written on American Airlines stationery, the five-page letter requested a meeting with President Nixon. Presley intended to present the President with a gift of a World War II-era pistol and obtain for himself the credentials of a federal agent in the war on drugs.
Source
National Archives and Records Administration. "When Nixon Met Elvis." 21 December 1970. (1 November 2005). Created by Gary Keith and Mike Frost.