Gun owners from both parties in the US Senate today announced a compromise amendment that could mean a gun safety measure will get to the floor. Joe Manchin (D-WV) reflected that the events at Newtown "changed our hearts and minds." Pat Toomey (R-PA) said he's on board, but played down the impact of background checks. "It's the people who fail a criminal or a mental health background check that we don't want having guns." Fawn Johnson reports on Congress for the National Journal.