** FILE ** Texas Gov. Rick Perry looks at the crowd as he is introduced during a stop on his GOP presidential campaign in Fort Dodge, Iowa, on Saturday, Dec. 31, 2011. (AP Photo/Charlie Riedel)

Photo by: Charlie Riedel

** FILE ** Texas Gov. Rick Perry looks at the crowd as he is introduced during a stop on his GOP presidential campaign in Fort Dodge, Iowa, on Saturday, Dec. 31, 2011. (AP Photo/Charlie Riedel)