it exposed things that didn't need to be exposed. it would have been better off if this happened behind the scenes. funding would have been restored and the relationship with ukraine would be far better off than it is today. >> the president attacking another witness after demonizing marie yovanovitch while she testified on friday. the president on sunday lashed out at another witness, jennifer williams, an aide to vice president mike pence. he went after her as a never-trumper. she is set to testify tomorrow. >> williams listened in on the phone call to ukraine. she testified privately that trump's request for investigation struck her as, quote, unusual and inappropriate. the president's latest attacks on a witness threatens to deepen his trouble in a frenetic week ahead. cnn's david shortell has more from washington. >> reporter: eight witnesses set to testify publicly this week before the house intelligence