FILE PHOTO: Former U.S. presidents pose with Billy Graham and his son in Charlotte
FILE PHOTO: Former U.S. presidents, George H.W. Bush, Bill Clinton and Jimmy Carter, pose with evangelist Billy Graham (C) and his son, Franklin Graham before the Billy Graham Library Dedication on the campus of the Billy Graham Evangelistic Association in Charlotte, North Carolina, U.S., May 31, 2007. REUTERS/Chris Keane/File Photo