"What are we doing?": Senators debate gun control at Judiciary Committee hearing

A Senate hearing on gun violence on Tuesday highlighted the significant disagreements between Democrats and Republicans on the best ways to prevent mass shootings and reduce firearm deaths. While Democrats argued that recent massacres show the need for more stringent gun control measures, Republicans said that proposed legislation to expand background checks wouldn't necessarily prevent violence.

The hearing before the Senate Judiciary Committee was scheduled before Monday's shooting in Boulder, Colorado, which left 10 people dead, including a police officer.

Judiciary Committee Chair Dick Durbin began the hearing by saying that he could ask for a moment of silence to commemorate the victims of the latest shooting, but what he wants is a moment of action.