Mr. Comey testified Thursday that Mr. Trump had pressured him to ease off the agency's probe of the former national security adviser. Mr. Trump's comments were part of a broader counterattack launched on Friday by the president and his allies against Mr. Comey's testimony before the Senate Intelligence Committee on Thursday. Earlier in the day, the president tweeted that Mr. Comey had lied in his testimony, and Trump allies sought to raise questions about the former FBI director's credibility.