Rep. Eric Swalwell, a 2020 Democratic presidential underdog, reacted to Attorney General William Barr’s Thursday morning remarks on the Mueller report by calling for his immediate resignation, claiming that the investigation had been “tainted.”

“He came to this job already biased. Today, he made a show of allegiance to the President over the American people by declaring ‘no collusion’ and excusing the President on the basis of his emotional state,” the California congressman said in a press release. “He has proved that he’s an embedded Trump ally who puts this President’s political future above of the rule of law. That makes him unfit to serve. He must resign.”