DailyNewsVideofeed: Tillerson unaware of White House 'person of interest' in Russia probe

U.S. Secretary of State Rex Tillerson, at a news conference in Saudi Arabia, said he had no knowledge about a "person of interest" in the Trump administration, following a Washington Post story that said a current White House official close to President Donald Trump was a significant "person of interest" in the investigation into possible ties with Russia. Rough Cut (no reporter narration).