Chris Krebs, former director of CISA, talks with Rachel Maddow about the vulnerability of U.S. institutions to ransomware attacks and the threat posed to the smooth running of everyday business in America. » Subscribe to MSNBC: http://on.msnbc.com/SubscribeTomsnbc​​​ About The Rachel…

Rachel Maddow explains how Robert Mueller laid out the ways in which Donald Trump potentially committed obstruction of justice (even though Mueller would not prosecute Trump as president) and notes that Don McGahn’s testimony was key to putting that together.…