Thompson gained fame from Watergate

Thompson, now preparing a bid for the 2008 GOP presidential nomination, won fame in 1973 for asking a committee witness the bombshell question that revealed Nixon had installed hidden listening devices and taping equipment in the Oval Office.

Those tapes show Thompson played a behind-the-scenes role that was very different from his public image three decades ago. He comes across as a partisan willing to cooperate with the Nixon White House’s effort to discredit the committee’s star witness.

It was Thompson who tipped off the White House that the Senate committee knew about the tapes. They eventually cinched Nixon’s downfall in the scandal resulting from the break-in at Democratic headquarters in the Watergate complex in Washington and the subsequent White House cover-up.

Thompson, then 30, was appointed counsel by his political mentor, Tennessee Sen. Howard Baker, the top Republican on the Senate investigative committee. Thompson had been an assistant U.S. attorney in Nashville, Tenn., and had managed Baker’s re-election campaign. Thompson later was a senator himself.

Nixon was disappointed with the selection of Thompson, whom he called “dumb as hell.” The president did not think Thompson was skilled enough to interrogate unfriendly witnesses and would be outsmarted by the committee’s Democratic counsel.

At a hearing on July 16, Thompson asked former White House aide Alexander Butterfield: “Mr. Butterfield, are you aware of the installation of any listening devices in the Oval Office of the president?”