On May 1, 2010, rallies were held across the US to protest the passage of the controversial Arizona immigration law, SB 1070, which would require law enforcement to question anyone whose immigration status appears reasonably suspect. The law would also grant enhanced powers of interrogation and detention to the state. Criticism of the law's passage came immediately from officials across the country including Secretary of Homeland Security Janet Napolitano and President Barack Obama. In April 2011, the US Court of Appeals for the Ninth Circuit upheld an injunction preventing the law from taking effect, and the US Supreme Court granted certiorari in the controversy in December 2011. In April 2012, the Court heard its final oral arguments in the case of Arizona v. United States to determine if the controversial law is preempted by federal law.
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