 It's Morning Edition from NPR News. I'm Sasha Pfeiffer in Washington, D.C. And I'm A. Martinez in Culver City, California. The theme of the Republican National Convention last night was, quote, make America safe once again. And that theme echoes a common refrain of former President Donald Trump over the years. He often claims that we live in a society plagued by widespread violent crime and contrary to evidence that immigrants perpetuate those crimes.