what crimes?Um, no, they had evidence that the President or people around him committed crimes and they investigated.
Unlike other presidents who cooperated with such investigations (Reagan with Iran-Contra, Clinton with Whitewater, Bush with the Plame investigation), Trump decided that he was going to abuse his office to obstruct it, and then threw a tantrum demanding an investigation of the investigators.
and Mueller disagrees...with your claims of obstruction>....https://www.nbcnews.com/politics/congress/full-transcript-robert-mueller-house-committee-testimony-n1033216
COLLINS:
At any time in the investigation, was your investigation curtailed or stopped or hindered?
MUELLER:
No.