Elvis Was a Freak, Too

'On December 21, 1970, Elvis Presley paid a visit to President Richard M. Nixon at the White House in Washington, D.C. The meeting was initiated by Presley, who wrote Nixon a six-page letter requesting a visit with the President and suggesting that he be made a "Federal Agent-at-Large" in the Bureau of Narcotics and Dangerous Drugs.'

(source: http://www.gwu.edu/~nsarchiv/nsa/elvis/elnix.html)