For all the positive that he did accomplish in such a short, half-handicapped time, Trump made two really big mistakes during his administration; he trusted and employed too many untrustworthy people because they knew the game better than he did, and claimed to be "Republican", and, once the writing was on the wall that he wasn't to stay in office, he didn't pardon Julian Assange. I guess three things if you count Israel, but that somewhat falls into the thing about trusting the wrong people, anyway.