A confidential internal review found White House acting Chief of Staff Mick Mulvaney asked budget office officials for an "after-the-fact justification" for withholding aid to Ukraine, the Washington Post first reported Sunday.
Why it matters: The issue of blocking almost $400 million in military aid to Ukraine is central to the impeachment inquiry, as House investigators examine allegations that President Trump ordered the move to press for Ukraine to investigate former Vice President Joe Biden and his son. Trump denies any wrongdoing.