Four people sneak away from the US/Mexico border fence behind them after illegally crossing into the border town of Nogales, Arizona, on May 31, 2010. (Associated Press/Krista Kennell/Sipa Press) **FILE**
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Four people sneak away from the US/Mexico border fence behind them after illegally crossing into the border town of Nogales, Arizona, on May 31, 2010. (Associated Press/Krista Kennell/Sipa Press) **FILE**
