 In a first-of-its-kind advisory on Tuesday, U.S. Surgeon General Vivek Murthy called on the nation to address gun violence with the same seriousness as car crashes and smoking-related deaths. This is an issue Murthy has been talking about since his first stint as Surgeon General during the Obama administration when his confirmation was stalled by the NRA. Ron, what do we know about where efforts to regulate gun violence stand on the federal level?