Robert Mueller is conducting a "full and thorough investigation of the Russian government's efforts to interfere in the 2016 election," and any possible links between the Russian government and the Trump campaign. Any such links could be called collusion, but is collusion a crime? 'New Yorker' staff writer and CNN chief legal analyst Jeffrey Toobin discusses the Mueller investigation and the approach President Donald Trump's legal team is taking. Film critic Justin Chang reviews 'Foxtrot.'