** FILE ** In this Dec. 1, 2011, file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney meets with former President George H.W. Bush in Houston. (AP Photo/Pat Sullivan, File)

Photo by: Pat Sullivan

** FILE ** In this Dec. 1, 2011, file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney meets with former President George H.W. Bush in Houston. (AP Photo/Pat Sullivan, File)