 I'm Tom Rigotti. At the Republican National Convention, Donald Trump has picked Ohio Senator J.D. Vance as his running mate. Fox's Mark Meredith has more on Vance's background. Vance spent four years in the Marines serving in Iraq, later earning an undergrad degree from Ohio State and a law degree from Yale. Vance, who turns 40 next month, was once a critic of Donald Trump, telling a journalist in 2016, quote, I'm a never Trump guy.