Here's the testimony of Comey's number two, who stresses there has been no interference "to date":
The notes taken by Comey appear to contradict testimony offered just last week by his temporary successor, acting FBI director Andrew McCabe.
"There has been no effort to impede our investigation to date,'' McCabe said last week in response to a question posed by Sen. Marco Rubio of Florida. "Simply put, sir, you cannot stop the men and women of the FBI from doing the right thing, protecting the American people and upholding the Constitution.''
Law enforcement officials declined to explain the apparent contradiction between Comey's notes and McCabe's testimony.