Matthew Whitaker

Matthew Whitaker said that he's been fully briefed on the Russia investigation and that he was looking forward to a final report from special counsel Robert Mueller.

Trump said on Friday that he doesn't know Matthew Whitaker. Last month on television, the president said not only that he knew him but that he is a "great guy."

The chief of staff to former Attorney General Jeff Sessions, Whitaker is a former U.S. attorney with a history of questioning the scope of special counsel Robert Mueller's Russia investigation.