Republicans on Capitol Hill have largely stayed firm in their defense of President Trump during the public impeachment hearings. Larry Sabato, director of the University of Virginia Center for Politics; Patrick Maney, a professor of modern American history at Boston College; and Mark Summers, a history professor at the University of Kentucky, joined “Red & Blue” to discuss how the 2019 impeachment process compares to those faced by presidents Andrew Johnson, Richard Nixon and Bill Clinton. Source