JD Vance stumbles in his debut as Democrats go on offense

Republican Vice Presidential nominee J.D. Vance speaks at a rally July 27 at the Herb Brooks National Hockey Center in St. Cloud, Minnesota. Vance introduced running mate former President Donald Trump, who called on his supporters to flip the state red. (Reid Glenn / USA TODAY NETWORK)

The choice of Sen. JD Vance as former President Donald Trump’s running mate reflected the confidence of a campaign so sure of victory in November that it could look beyond a second Trump term to the legacy of his movement.