Indicted Giuliani associate Lev Parnas was interviewed by Rachel Maddow Wednesday. During the interview, Parnas describes his relationship with Rudy Giuliani, White House officials, and other individuals tied to the Ukraine scheme. “President Trump knew exactly what was going on,” he said. MSNBC hosts and contributors take a look at what is credible about Parnasβ testimony and how it might affect the impeachment trial.