Trump vehemently denies any collusion with Putin’s troll-farms.

And almost all people, implicitly and/or explicitly, accept that the troll-farms had, or at least attempted to have, a certain influence over the American electoral process in 2016.

Does Putin actually control Trump? Did Putin ever imagined that he could control Trump while in office?
That would have been extremely naive… Trump may be influenced – like all other people, but he is a lot harder to control than most of us. Even by himself…
On the other hand, the ‘checks and balances’ are still in place and makes it almost impossible for a foreign agent to exert a sizable influence over the US Government.

Directly, that is…

The particular configuration of the American political spectrum in 2016 had been a huge opportunity for Putin.
He needs to convince those who support him, both inside and outside Russia, that he is a ‘shrewd operator’ and that Russia still belongs to the big boys table.
Meddling into the 2016 presidential campaign accomplished both Putin’s goals.

Maybe another investigation but Mueller’s is in order.
What possessed both major US political parties to nominate such candidates?
Which had so many skeletons in their closets for ‘shrewd operators’ to unearth?