washington republican chairman house intelligence committee apologize democratic members panel go public white house brief information say obtain surveillance president donald trump team committee aide say thursday committee chairman representative devin nunes also promise work panel democrats share information aide say day committee democrats say nunes action raise question panel ability credibly investigate potential tie trump associate russia nunes surprise anger committee democrats fellow republicans wednesday surprise announcement private communications trump members team may sweep u.s. intelligence monitor foreign target nunes apologize democrats surveillance comment aide