Republican presidential candidate, former Massachusetts Gov. Mitt Romney pauses during a speech to the NAACP annual convention, Wednesday, July 11, 2012, in Houston, Texas. (AP Photo/H

 

              Republican presidential candidate, former Massachusetts Gov. Mitt Romney pauses during a speech to the NAACP annual convention, Wednesday, July 11, 2012, in Houston, Texas.  (AP Photo/H
Republican presidential candidate, former Massachusetts Gov. Mitt Romney pauses during a speech to the NAACP annual convention, Wednesday, July 11, 2012, in Houston, Texas. (AP Photo/Houston Chronicle, Michael Paulsen)