Emoluments clause violations, for one thing. No room to debate that at all. The Repubs would have screamed bloody murder if Obama had rented golf carts to his own Secret Service detail.... but then, to be fair, Obama was black.
As for the Russia stuff, we'll just have to wait and see what develops. We've been fed a lot of confusing lies about meetings, people, and events that we're told were totally legit. There's plenty of smoke but no fire. It's hard to breathe, and the thermometer on the wall is pegged out at 130 degrees, but I'm sure it's just an A/C malfunction.
Then there's the interesting matter of $50,000 paid out of Cohen's bimbo management fund for "tech services" that no one including the bimbos in question seems to know much about. I guess there was enough cash left in the slush fund to upgrade all his office computers to Windows 10, huh. That must be it.