Arizona Gov. Jan Brewer, who appears to have gotten a political boost from her support of the immigration law. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Hundreds of members of the Los Angeles County Federation of Labor march to the Capitol in Phoenix on Thursday in protest of Arizona's immigration-enforcement law. Ralph Freso/AP hide caption

itoggle caption Ralph Freso/AP