All In With Chris Hayes

Guests: Rep. Jim Clyburn, George Conway, Dave Wasserman, James Carville, Rep. Jasmine Crockett, Jason RezaianShe's only just secured enough delegates to become the Democratic nominee—but Kamala Harris has been rocketing up the polls ever since she announced her candidacy. Plus, the next big thing on the Harris campaign to-do list: Picking a vice president. Then, Simone Biles is one of the most dominant Olympians in American history. But JD Vance still found a way to be a total weirdo about her. And the incredible moment when three Americans imprisoned in Russia finally arrived home.    Want more of Chris? Download and subscribe to his podcast, “Why Is This Happening? The Chris Hayes podcast” wherever you get your podcasts.