Veetek Witkowski holds a newly assembled AR-15 rifle at the Stag Arms company in New Britain, Conn., in April. Charles Krupa/AP hide caption

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Sen. Susan Collins, R-Maine, is among the lawmakers who say they were never briefed about the government's surveillance programs. T.J. Kirkpatrick/Getty Images hide caption

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Sen. Kirsten Gillibrand greets panel members from the military and the Defense Department testifying on Capitol Hill on March 13 before the subcommittee's hearing on sexual assault in the military. Carolyn Kaster/AP hide caption

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Deward Cawthon, a plant operator at the Federal Helium Reserve, walks through the Federal Crude Helium Enrichment Unit near Amarillo, Texas, in 2011. Joyce Marshall/MCT/Landov hide caption

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After years in the halls of Congress, Republican Mitch McConnell has to convince Kentucky voters that he's still paying attention to what they want. Chip Somodevilla/Getty Images hide caption

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New York City Mayor Michael Bloomberg speaks at a news conference at City Hall on April 25. The billionaire mayor has been spending from his personal fortune to provide a "political counterweight to the NRA," his policy adviser says. Spencer Platt/Getty Images hide caption

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