Mr. Brennan, who has not hidden his dislike for Mr. Trump, testified he briefed the investigation’s progress to Mr. Obama, who at the time was trying to aid Hillary Clinton in her campaign against the Republican nominee.
It was then-CIA Director John O. Brennan, a close confidant of Mr. Obama’s, who provided the information — what he termed the “basis” — for the FBI to start the counterintelligence investigation last summer. Mr. Brennan served on the former president’s 2008 presidential campaign and in his White House.
Mr. Brennan told the House Intelligence Committee on May 23 that the intelligence community was picking up tidbits on Trump associates making contacts with Russians. Mr. Brennan did not name either the Russians or the Trump people. He indicated he did not know what was said.