Trump lies impeded the investigation.
That's straight from Mueller and the report. He was able to complete the investigation, but Trump impeded it.
It's hilarious listening to conservatives try to argue that because Mueller was able to complete the investigation and there was no evidence of collusion, it wasn't a crime. I remember Clinton being accused of collusion even though what Starr was investigating, Clinton cheating on his wife, wasn't a crime at all to begin with. Didn't stop them from impeaching.