Arizona immigration law

U.S. Border Patrol agents patrol the border separating Nogales, Ariz., and Nogales, Mexico, on the eve of the scheduled implementation of Arizona's new immigration law.

Ernesto Fiscal, foreground, and other illegal immigrants, who were deported to Mexico gather near the Nogales Port of Entry in Nogales, Sonora, Mexico, Wednesday, July 28, 2010. A report out Wednesday, Sept. 1, 2010, said illegal immigration into the United States has reduced drastically. (AP Photo/Jae C. Hong)

Ernesto Fiscal, foreground, and other illegal immigrants, who were deported to Mexico gather near the Nogales Port of Entry in Nogales, Sonora, Mexico, Wednesday, July 28, 2010. A report out Wednesday, Sept. 1, 2010, said illegal immigration into the United States has reduced drastically. (AP Photo/Jae C. Hong)

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