Of course there was no Trump Russia collusion. It was a Clinton/Obama hoax to damage Trump, and it has done so with years of smears. Truly disgusting, even by low American political standards. All collusion with Russia was done by the Clinton team. (This was not investigated, of course.)
So, given no wrongdoing, they have moved on to obstruction. It's a fact that obstruction is wrongdoing, even when there is no underlying wrongdoing.
Problem is, Trump behaved like any angry and innocent victim of a nasty persecution. Donald "You're fired!" Trump fired off at all of this, frequently, and publicly, because he foresaw an endless assault on his presidency by political enemies.
Dems will try to keep this active for the next five years. It's not good for the country, but that's not the point. It's all they have.
One unfortunate effect of all of this bs is that it has made it difficult for the US to work with the Russians, a third-world country but oil rich with nuclear weapons. Trump has been too harsh with them because they are not enemies, just sneaky sleazes.
I think Mueller exhaustion has set in, except for NPR and MSNBC.