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Why the assault weapons ban was really killed–and what happens next?

Joe Biden is not giving up.

People hold signs during a rally at the Connecticut State Capital to promote gun control legislation in the wake of the December 14, 2012, school shooting in Newtown on February 14, 2013 in Hartford, Connecticut. Referred to as the "March for Change"...
People hold signs during a rally at the Connecticut State Capital to promote gun control legislation in the wake of the December 14, 2012, school shooting in…Getty Images