File photo of demonstrators against the state's Senate Bill 1070 immigration law gather before a rally and march in Phoenix

 
File photo of demonstrators against the state
Demonstrators against the state's Senate Bill 1070 immigration law gather before a rally and march in Phoenix, Arizona in this April 25, 2012 file photo. As the U.S. Supreme Court readies a decision on Arizona's tough immigration law, the consensus among advocates on both sides is that at least part of the measure will be upheld. If that happens, a separate pending case might block the law from taking effect. Picture taken April 25, 2012. REUTERS/Eric Thayer/Files (UNITED STATES - Tags: SOCIETY IMMIGRATION POLITICS)