 Live from NPR News in Washington, I'm Corva Coleman. Republican delegates are gathering for the second day of their national convention in Milwaukee today. As NPR's Sarah McCammon reports, after months of tension with former President Donald Trump, former primary opponent Nikki Haley is expected to be among today's speakers. Convention officials say Tuesday's theme will focus on safety, including issues of border security, drug trafficking and domestic crime. Former South Carolina Governor Nikki Haley is expected to be among the day's speakers.