The Rev. Billy Graham, one of the most influential religious figures in U.S. history and a trusted adviser to decades of U.S. presidents, has died, according to the Associated Press. He was 99. Graham was diagnosed with Parkinson's disease since 1992. For decades starting with Harry Truman, Graham would be seen at the side of U.S. presidents as he served as a valued counselor, during both their brightest days and their sleepless nights. "People in power have spiritual and personal needs like everyone else, and often they have no one to talk to," the evangelist said in 2011.