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Photo by: Susan Walsh

President Obama urges Congress to take action on measures to protect children from gun violence on Thursday, March 28, 2013, while speaking in the East Room of the White House in Washington. Standing with Mr. Obama are Vice President Joseph R. Biden (left) and, according to the White House, law enforcement officials, victims of gun violence and others, whom the White House did not want to name. (AP Photo/Susan Walsh)

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