Four Witnesses Testify Publicly, Three Were On Ukraine Call; Pres. Trump Tweets During Hearing: "A Great Day For Republicans"; Pres. Trump: GOP "Absolutely Killing It" At Impeachment Inquiry

Anderson Cooper 360

Morrison Says He Had No Concerns About Pres. Trump's July 25 Call, While Volker Says He Wasn't Involved In Bribery; Ex-Ukraine Enovy Changes Past Testimony, Now Says Push To Investigate Burisma Connected To Biden; Volker Says He Found The Reference To Biden During Pres. Trump's July 25 Call Unacceptable; Key Witnesses Say They've Never Seen Aid Withheld "Because The President Wanted His Rival Investigated"; Morrison: Investigating The Bidens "Was Not A Policy Objective"; Volker: What Giuliani Was Saying About Ukraine Was A "Problem"; Morrison: Investigating The Bidens "Was Not A Policy Objective"; Ex-Ukraine Envoy Changes Past Testimony, Now Says Push To Investigate Burisma Connected To Biden; Volker: What Giuliani Was Saying; Ex-White House Aide: Highly Unusual Effort To "Lock Down" Transcript Of July 25 Call Was An "Administrative Error"; Ex-Envoy Says He Should Have Recognized Push For Probe Into Ukrainian Company Was Connected To Biden; Pres. Trump Tweets During Hearing: "A Great Day For Republicans"; Vindman, Williams Say They Are Not "Never Trumpers"; Videnman: "Improper" For Pres. Trump To Demand Investigation Of Biden; Vindman: Giuliani's Foreign Involvement "Wasn't Helpful"; Four Witnesses Testify Publicly, Three Were On Ukraine Call; Videnman Says He Told Ukraine's President Not To Meddle In U.S. Politics; Pres. Trump: GOP "Absolutely Killing It" At Impeachment Inquiry; GOP Fears EU Ambassador's Testimony Tomorrow And Whether He Will Turn On Pres. Trump; Vindman: "Improper" For Pres. Trump To Demand Investigation Of Biden; Admin. Official On Day's Testimony: "Somewhere Between A Tie And A Win..."

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