Former president George W. Bush wipes a tear after his speech during the dedication of the George W. Bush Presidential Center in Dallas on April 25, 2013. His father, former president George H.W. Bush, is at left. (Associated Press)

Photo by: David J. Phillip

Former president George W. Bush wipes a tear after his speech during the dedication of the George W. Bush Presidential Center in Dallas on April 25, 2013. His father, former president George H.W. Bush, is at left. (Associated Press)