Mitch McConnell’s announcement he will end his tenure as the longest-serving Senate leader in U.S. history solidifies Donald Trump as the leader of today’s Republican Party. The panel discusses his legacy and what's next for the GOP. Watch the latest Washington Week with The Atlantic here: https://pbs.org/washingtonweek Subscribe to our YouTube channel: https://bit.ly/2ZEPJNs Follow us on Twitter: https://twitter.com/washingtonweek Like us on Facebook: https://www.facebook.com/washingtonweek