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

People stand in line for the chance to have former U.S. President George W. Bush sign copies of his new memoir "Decision Points" at a Barnes & Noble in Houston, Texas on November 17, 2010. UPI/Aaron M. Sprecher

Former U.S. President George W. Bush 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

Former U.S. President George W. Bush shakes hands with customers 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