Schiff Blocks Questioning of Vindman Over Whistleblower Concerns, Sparking Confusion During Impeachment Hearing

House Intelligence Chairman Adam Schiff (D-Calif.) intervenes to voice his concern about keeping the whistleblower's identity secret as Ranking Member Devin Nunes (R-Calif.) questions National Security Council Director for European Affairs Lt. Col. Alexander Vindman during testimony before the House Intelligence Committee in the Longworth House Office Building on Capitol Hill in Washington on Nov. 19, 2019. Shawn Thew-Pool/Getty Images

House Intelligence Chairman Adam Schiff (D-Calif.) sparked confusion during the open impeachment hearing on Tuesday by blocking a line of questioning pursued by his Republican counterpart, Ranking Member Devin Nunes (R-Calif.)

Schiff, who has said he doesn’t know who the person is who filed a complaint against President Donald Trump, interjected when Nunes tried getting information from witness Lt. Col. Alexander Vindman, a National Security Council official.