Vice President Joe Biden gave an impassioned plea earlier today for increased measures to curb the nation's gun violence, about 15 miles away from the site of the horrific elementary-school massacre in Newtown, Conn.
Last month, President Barack Obama proposed sweeping new measures to curb gun violence . But after the event in Danbury today, Connecticut's two Democratic Senators tempered expectations as to what gun control measures could pass through Congress.
Here's a look at why a lot of Obama's gun control proposals look to be a tough sell in Congress:
Produced by Daniel Goodman
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