 Live from NPR News in Culver City, California, I'm Dwayne Brown. In Milwaukee, Republicans are highlighting immigration and border security on this, the second day of the GOP National Convention. NPR's Jasmine Garz has more. One of the pillars of former President Donald Trump's campaign has been to assert that migrants are mostly criminals and are causing a rise in crime. He's promised that if elected, he will undertake the largest deportation campaign in American history.