washington white house respond hear capitol hill contact officials donald trump presidential campaign russia say tuesday evidence collusion trump team moscow testify house panel former cia director john brennan say aware contact russian officials people involve trump campaign grow concern moscow seek lure americans treasonous path dan coat director national intelligence question separate testimony senate panel report washington post trump ask coat help knock notion evidence collusion coat sidestep question say make clear trump administration political shape intelligence would inappropriate statement reporters white house official say hear show still evidence russia-trump campaign collusion trump rome first overseas trip president embroil controversy since fire early month federal bureau investigation director jam comey amid agency investigation possible tie trump campaign russian officials white house say evidence trump team collusion russians