George W. Bush's book tour (11 images)

Former President George W. Bush exits the room with former First lady Nancy Reagan on his arm, as he was there to discuss his memoirs, "Decision Points", during a Perspectives in Leadership Forum at The Ronald Reagan Presidential Library in Simi Valley, California on November 18, 2010. UPI/Jayne Kamin-Oncea

Former President George W. Bush exits the room with former First lady Nancy Reagan on his arm, as he was there to discuss his memoirs, "Decision Points", during a Perspectives in Leadership Forum at The Ronald Reagan Presidential Library in Simi Valley, California on November 18, 2010. UPI/Jayne Kamin-Oncea

Former President George W. Bush discusses his memoirs, "Decision Points", during a Perspectives in Leadership Forum at The Ronald Reagan Presidential Library in Simi Valley, California on November 18, 2010. UPI/Jayne Kamin-Oncea

Former U.S. President George W. Bush shares a laugh with a customer as he signs copies of his new memoir "Decision Points" at a Barnes & Noble in Houston, Texas on November 17, 2010. Hundreds of people lined up for the chance to purchase signed copies of "Decision Points" at the bookstore. UPI/Aaron M. Sprecher