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A US Border Patrol agent stands near a crossing to Mexico at the San Ysidro port of entry along the US-Mexico border near San Diego, California on April 4, 2013.
Today a group of Dept. of Homeland Security employees hopes to tip the odds against the passage of the Senate's immigration legislation. Two labor unions are issuing a letter which expresses scathing criticism of the Gang of Eight's plan. They say the legislation as written would be perilous to public safety.
For more on this move and who's behind it, we're joined now by Julia Preston of the New York Times.