Emily Jane Fox discusses the loyalty of Trump's laywer Michael Cohen as he prepares to go before a congressional hearing. William D. Cohen reaveals his story about a mysterious document that helped prompt Jamie Dimon and JP Morgan Chase to make a $13 billion dollar settlement with the government. Nick Bilton and T.A. Frank discuss LinkedIn Co-Founder Reid Hoffman's use of his personal fortune to oppose Trump. Bess Levin reports on Steve Mnuchin's new bride Louise Linton's apology for her instagram diatribe. Yale professor Barry Nalebuff discusses whether Trump and Kim Jong-un are engaged in brinkmanship or game theory.