Whistleblower: Trump tried to get Ukraine to interfere in election, and White House tried to cover it up. 2-episode special edition of The Lead.

Trump compares whistleblower's sources to "spies," makes reference to executions like the old days; Whistleblower alleges White House cover-up; John Dean reacts to whistleblower complaint; Whistleblower: WH officials were "deeply disturbed" by president's conduct on the call with Ukraine

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