Trump pretends he's conducting an orchestra during the national anthem, which, following his own logic, means he should probably be deported or something. Ezra Klein LIVE on his new book, Why We're Polarized and how we can start working to fix our inherently divisive system. Jordan Uhl LIVE recapping the utter disaster that was the Iowa caucus, how the Biden camp is handling the loss, Buttigieg starting to backtrack his premature declaration of victory, Nina Turner calling Bloomberg an oligarch...