Former President Donald Trump chose Ohio Sen. J.D. Vance as his running mate on Monday, just as Republicans kicked off their national convention in Milwaukee. Vance, who rose to fame in 2016 with his memoir ‘Hillbilly Elegy,’ has undergone a radical political transformation in the years since. Once an outspoken critic of Trump, Vance is now one of the former president’s biggest supporters in Congress. Zack Beauchamp, a senior correspondent for Vox and author of the new book “The Reactionary Spirit,” explains why Vance was a logical pick for Trump. And in headlines: Department of Homeland Security Secretary Alejandro Mayorkas said the assassination attempt against former Trump at the weekend rally was a security “failure,” Special Counsel Jack Smith says he’ll appeal a federal judge’s decision to dismiss Trump’s classified documents case, and President Biden reiterated his plans to stay in the presidential race during an interview with NBC’s Lester Holt.