Democrats are using the mass shooting in Colorado on Monday to renew their push to eliminate the filibuster and pass new gun control legislation. Prominent Democrats said the Senate must eliminate the filibuster in order to push through new gun control laws in response to the killings. Sen. Elizabeth Warren (Mass.), Rep. Jason Crow (Colo.), Rep. David Cicilline (R.I.), Pennsylvania lieutenant governor candidate John Fetterman, and Pennsylvania Senate candidate Malcolm Kenyatta all called for the filibuster to end in the wake of Monday's attack. "Things won't get better until Democrats get rid of the filibuster and finally pass gun safety...