Watch: Ambassador Sondland Testifies in Impeachment Hearing

Ambassador Gordon Sondland (C) arrives at the U.S. Capitol in Washington on Oct. 17, 2019. Olivier Doulier /AFP/Getty Images

Ambassador to the European Union Gordon Sondland will testify on Wednesday in front of the House impeachment inquiry after earlier witnesses contradicted his earlier deposition in closed-door meetings, which he later amended.