After months of oscillating speculation former Vice President Joe Biden has announced that he will run for president in 2020. Plus, Democrats subpoena former White house counsel Don McGahn to testify about findings in the Mueller Report. This episode: White House correspondent Tamara Keith, political reporter Danielle Kurtzleben, Congressional reporter Kelsey Snell, and national political correspondent Mara Liasson. Email the show at nprpolitics@npr.org. Find and support your local public radio station at npr.org/stations.