Trump's Gun Views in Spotlight Amid String of Accidental School Shootings

Donald Trump has walked back his hard line on guns in schools as expressed at last week's NRA conference, which came amid a string of accidental shootings in recent weeks. The presumptive Republican presidential nominee, who was recently endorsed by the NRA, told CNN on Monday that "school resource officers" or trained teachers should be allowed to carry guns on school grounds. Trump previously argued against gun-free zones in schools and on military bases.