Attorney General Jeff Sessions started his testimony before the Senate Intelligence Committee by calling any suggestion that he colluded with Russians during the election a "detestable" lie. But Democrats challenged Sessions' denials and some accused him of impeding the Senate investigation by not answering questions about his direct conversations with President Trump. Did the AG's answers shed any light, or just add heat? Our guests are Carrie Johnson, justice correspondent for NPR; Josh Gerstein, senior reporter for Politico; John Dean, legal counsel to President Nixon during Watergate and a political analyst for CNN; and Walter Dellinger, a partner at the law firm O'Melveny and former solicitor general, assistant attorney general and head of the Office of Legal Counsel during the Clinton administration.