Rep. Speier: White House aides who testify are 'true heroes'

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Congresswoman Jackie Speier (D-CA) joins Hallie Jackson in the midst of a whirlwind week for the impeachment inquiry, with various current and former Trump aides on the Hill testifying. Speier comments on the progress the investigation is making and denounces what she considers to be a "rogue, shadow government" operating around the secretive Ukraine deals.