"We can't wait for D.C. to pass laws"
Nicole Hockley, who lost her 6-year-old son, Dylan, in the Sandy Hook school shooting, talks about her disappointment with Congress for failing to pass gun legislation and what signal it sent to her. Watch more of Scott Pelley's interview with Hockley and Bill Sherlach, whose wife was also killed in the shooting, tonight on the "CBS Evening News" at 6:30 p.m. ET.