As the United States experiences more than one mass shooting per day, the issue of gun regulation is emerging as a hot topic on the 2016 presidential campaign trail. As Democratic presidential hopeful Hillary Clinton has vowed to curb gun violence, Republican presidential candidates have refused calls for gun control in the wake of last week’s massacre at Umpqua Community College. Donald Trump told NBC’s Meet the Press that mass shooters are “geniuses in a certain way. They are going to be able to break the system.” John Kasich told the U.S. Hispanic Chamber of Commerce, “I don’t think gun control would solve this problem. The deeper issue is alienation. The deeper issue is loneliness.” Ben Carson implied that the Oregon shooting victims didn’t do enough to save themselves, saying, “I would not just stand there and let him shoot me.” And Jeb Bush seemed to shrug off last week’s mass shooting, saying on Friday afternoon, “stuff happens.” We’re joined by Andy Parker, the father of 24-year-old broadcast journalist Alison Parker, who was shot dead on live television in August, and by Arkadi Gerney, senior vice president at the Center for American Progress who formerly worked with New York City Mayor Michael Bloomberg on the national coalition, Mayors Against Illegal Guns.