Harvard Law School Professor Laurence Tribe tells Lawrence O’Donnell that senators must vote for witnesses to ensure a fair trial, and that to acquit Trump on the Dershowitz defense would set a terrible precedent for future presidents and the country. Aired on 1/28/20. » Subscribe to MSNBC: MSNBC delivers breaking news, in-depth analysis of politics headlines, as well as commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, Morning Joe, Meet the Press Daily, The Beat with Ari Melber, Deadline: White House with Nicolle Wallace, Hardball, All In, Last Word, 11th Hour, and more. Connect with MSNBC Online Visit : Subscribe to MSNBC Newsletter: Find MSNBC on Facebook: Follow MSNBC on Twitter: Follow MSNBC on Instagram: Laurence Trib
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