An anonymous letter from a U.S. Capitol Police officer outlines the failures of leadership at the agency leading up to and during the riot. Plus, Texas Gov. Greg Abbott issues a ban on vaccine mandates. And Merck asks the FDA to authorize a pill to treat Covid. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc 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, The ReidOut, All In, Last Word, 11th Hour, and more. Connect with MSNBC Online Visit msnbc.com: http://on.msnbc.com/Readmsnbc Subscribe to MSNBC Newsletter: http://http://MSNBC.com/NewslettersYo... Find MSNBC on Facebook: http://on.msnbc.com/Likemsnbc Follow MSNBC on Twitter: http://on.msnbc.com/Followmsnbc Follow MSNBC on Instagram: http://on.msnbc.com/Instamsnbc #MSNBC #January6 #Trump