A levee protects a home surrounded by floodwater from the Yazoo River near Vicksburg, Miss., May 18, 2011. Scott Olson/Getty Images hide caption

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Mississippi Gov. Haley Barbour walks through the Iowa Statehouse before speaking to the Iowa Federation of Republican Woman March 15, in Des Moines, Iowa. Charlie Neibergall/AP hide caption

itoggle caption Charlie Neibergall/AP