 Marjorie Taylor Greene live on stage. Let's get a recap here of what happened earlier at the convention. This is a special report from ABC News, the Republican National Convention. I'm Daria Ulbiger. Ohio Senator J.D. Vance makes his first appearance as the party's vice presidential nominee to cheers and applause, but some are worried about his inexperience. J.D. Vance has held elective office for only two years, and some here at the GOP convention think that's a problem.