Former president George H.W. Bush, left, applauds with Laura Bush after former president George W. Bush's speech during the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)

Photo by: David J. Phillip

Former president George H.W. Bush, left, applauds with Laura Bush after former president George W. Bush's speech during the dedication of the George W. Bush Presidential Center Thursday, April 25, 2013, in Dallas. (AP Photo/David J. Phillip)