3 House Committees Now Threatening Subpoenas After Pres. Trump Admits Talking To Ukraine About Biden, As Democrats Call Whistleblower Complaint "Tipping Point" For Impeaching Pres. Trump

3 Committees Threaten Subpoenas, Dem Schumer Calls For Hearings "To Determine Exactly What Prompted The Whistleblower To File This Urgent Complaint"; Senate GOP Leader Mcconnell Accuses Schumer Of Trying To "Politicize" Whistleblower Complaint Investigation; Senate GOP Leader Mcconnell Says Intel Committee Should Work In "Secure" And "Bipartisan Fashion; GOP Sen. Grassley: Whistleblower Should Talk To Him; DEM Sen. Warner Calls For Bipartisan Intel Cmte. Probe; House Democrats Threaten To Subpoena Secretary Of State Pompeo Unless He Hands Over Ukraine Documents; House Democrats Will Meet Tuesday At 4 P.M. To Discuss Next Steps In Investigations

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