The first public hearing of the impeachment inquiry into President Trump was held Wednesday. Trump is just the fourth president in U.S. history to face impeachment. Two witnesses testified before the House Intelligence Committee: George Kent, a deputy assistant secretary of state, and William Taylor, a former ambassador and the top U.S. diplomat in Ukraine. They both said President Trump withheld aid to Ukraine in an attempt to pressure the country to investigate Joe Biden and his son Hunter, who served on the board of a Ukrainian natural gas company. We play highlights from the hearing.