I just learned that Bill Clinton drove Congressman Hale Boggs to the airport (in Texas) the day before he mysteriously perished in a plane crash in Alaska (a separate flight, but the timing is notable)
"New Details Uncovered in 1972 Disappearance of Congressman Hale Boggs.
… Hale Boggs, a powerful Democratic congressman with a colorful past, disappeared in a small plane over Alaska. The massive search that ensued turned up no leads, and the plane, along with the bodies of Boggs and three others who died, remains hidden somewhere in the wilderness.
Boggs – who served on the Warren Commission, accused the FBI of tapping congressional phones, and called for J. Edgar Hoover's resignation – was the majority leader of the U.S. House of Representatives…"
This website has some almond tingling bits of information, scroll to the comments for further dig info.
http://educationforum.ipbhost.com/topic/22683-new-details-uncovered-in-1972-disappearance-of-congressman-hale-boggs/