Gov. Gary R. Herbert recently signed four immigration bills that bring sweeping changes to his state's laws. Here, Herbert speaks after his inauguration in January. Scott Sommerdorf/AP hide caption

itoggle caption Scott Sommerdorf/AP

Indiana Gov Mitch Daniels speaks last month at the Conservative Political Action Conference in Washington. The speech has been called the most intellectually compelling conservative call to arms in years. Jose Luis Magana/AP hide caption

itoggle caption Jose Luis Magana/AP