>>Because we know about the Trump Tower meeting in June 2016<<
That meeting alone should have told anyone with an ounce of sense there was no “collusion” with Russia. If they were conspiring with Russia they wouldn’t have needed a meeting, they would have got any information secretly.
I'd say the meeting was a plain old setup.
Well, did you not know that it is Putin who conjured up the theme, “Make America Great Again?” A Russian goal if I ever saw one! /s