Collusion isnt a crime. If it was Donald Trump would most certainly be guilty.
It is a well established fact that DOnald Trump called upon Russia for information about Hilllary...and then gladly received it. He also was caught trying to open secret communication channels with Russian agents.
Neither of those things are illegal. But they were collusion. And if Obama or Joe Biden did anything like that Boilerman would have been shitting his pants on this board ever since.