 Live from NPR News in Culver City, California, I'm Dwayne Brown. Senator J.D. Vance of Ohio has been named Donald Trump's vice presidential pick during the start of the GOP convention. The once fierce critic of Trump has become a loyal ally with strong support among Republicans in the Rust Belt. NPR's Stephen Fowler has more. If Trump is the founder of the GOP's current America First agenda that attacks Democrats in the federal government, then Vance has positioned himself as the heir apparent to make America great again in the future.