President Obama, accompanied by Vice President Joe Biden, former Arizona Rep. Gabrielle Giffords and her husband Mark Kelly, signs Feb. 10, 2012, the Ultralight Aircraft Smuggling Prevention Act of 2012 in the Oval Office of the White House. The bill, which gives law enforcement greater authority to combat illicit drug trafficking on U.S. borders, is the last piece of legislation that Giffords sponsored and voted on. (Associated Press)
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