Donald Trump has done his best to destroy the American public's trust in the Mueller investigation. He has called it a hoax, a witch hunt, and a Democratic effort to damage his presidency. But he has not succeeded in doing anything except make it look like he is terrified at what Mueller may discover in his investigation.
The public still thinks the investigation is proper -- and more important, they say they would believe Mueller over Trump. That trust of Mueller over Trump is by 23 points among all adults, by 76 points among Democrats, and by 28 points among Independents. The only group that would believe Trump over Mueller is the Republicans -- by 57 points.
Republicans remain out-of-step with the rest of the country. That's not going to help Trump in the next election.
The chart above is from the Washington Post / Schar School Poll -- done between February 6th and 10th of a national sample of 841 adults, with a 4 point margin of error.