My stance on the Second Amendment is simple: I’m not going to take anyone’s guns away. I believe in the Constitution. But Americans need to work together to figure out why we have mass shootings every 21 hours. Something changed around the time of the Columbine shootings in 1999, and it wasn’t the number of guns in America. The National Institutes of Health refuses to investigate the mystery; in fact, Congress prohibits the NIH from researching the cause of mass shootings. Under my administration, that rule ends — and our kids’ safety becomes a top priority.