Assange collected all sorts of dirt on Hillary and the DNC, its inconceivable he wasn't also snooping on the GOP. This is why Trump is always trying to point out "there was no collusion". There probably isn't any, I doubt even the GOP would knowingly betray their country for money, but no doubt there is information there that is embarrassing. And I'm sure a lot of those "business deals" were just money laundering for Russian oligarchs. Trump may actually be innocent of treasonous acts, he was just too dumb and too greedy to figure out he was being conned and set up.

We all know how paranoid Trump is about any information that might "delegitimize" his Presidency. He'll do whatever it takes to keep it quiet, and Putin found him a lot easier to deal with than Obama or Hillary.

Potential extortion is why there are so many regulations about conducting business with foreign powers, regulations the Trump gang never paid any attention to. The Russians have always preferred blackmail to bribery.

Collusion? Treason? Probably not. Its probably worse.