In this Jan. 7, 2008, file photo, Bill Brock, former Republican National Chairman and U.S. Senator from Tennessee, gestures as he speaks at a bipartisan summit at the University of Oklahoma in Norman, Okla. Brock, a former Tennessee senator and Republican chairman who rebuilt the party after the Watergate scandal, died Thursday, March 25, 2021, family friend Tom Griscom said. He was 90. (AP Photo/Sue Ogrocki, File)