Ken Starr, the former special prosecutor who directed a federal investigation into Bill and Hillary Clinton when they occupied the White House, is defending special counsel Robert Mueller against accusations that the federal probe he is overseeing into President Trump is politically compromised.

Trump leveled those unfounded allegations on Thursday. In a series of tweets, the president said that Mueller is “highly conflicted” and overseeing a team of investigators comprised of “Democratic thugs.” But in an interview just days earlier, Starr described Mueller as “Mr. Honesty” and having “total integrity,” cautioning partisans not to make assumptions about what his probe might — or might not — uncover.