POMPANO BEACH, FL - APRIL 11:  As the U.S. Senate takes up gun legislation in Washington, DC , Mike Acevedo puts a weapon on display at the National Armory gun store on April 11, 2013 in Pompano Beach, Florida. The Senate voted 68-31 to begin debate on a bill that would significantly expand background checks for gun sales.  (Photo by Joe Raedle/Getty Images)