If there were any evidential elements involving the President don’t you think it would have been presented by now? I know when I was a Federal investigator the smokin gun evidence was the primary thrust to the process. There has been at least 4 separate bodies investigating this accusation for many months and no one has produced anything that resembles collusion by the President of his Campaign group. The indictments submitted by the current special counsel only amplifies the lack of any hard or circumstantial evidence to the accusations. It isn’t there and the tiny indictments presented to date are appeasement bones to try to make people think there is a monster in the chaos.
The congressional investigations are a joke. Especially the house, but also the senate to a significant degree. They're just going through the motions because the majority isn't interested in pursuing the case with vigor. People just roll in, plead that they either can't remember or executive privilege and off they go. So the only faith in what is being done is in Mueller. He's not a politician and had broad bipartisan support (at least before the undermining started) so I have faith in his process.
As for what we would know, the media is looking through a keyhole. Much of this may come down to financial ties which is harder to hide. The media has access to none of this and Mueller's group isn't leaking.
So we'll see. But the investigation has lead to quite a few indictments already. So it has borne fruit. It also has contradicted the lie Trump has been selling that it's all a witch hunt. Notice that talking point has gone away. At least for a few e weeks...
If screaming there is no collusion by Trump is considered undermining then that would be a problem but in reality it is a person that has been targeted demanding that someone produce or shut up.
There has been a hell of a lot more than that. He fired and has assassinated the character of Comey, he's threatened to fire Sessions who properly recused himself, he's rebuked and considered firing Rosenstein, he's impugned the integrity of Mueller, he's attacked the FBI, he's called the whole investigation a witchhunt, he allowed the release of the Nunes's memo which Trump's FBI director said has horseshit, he blocked the Dems memo which would have refuted it. That's just what I can think of off the top of my head.
This whole thought that he's a fighter so that's what he does is horseshit. If he thought the investigation was going to clear him, he would have just cooperated and let it run its course. He gives every indication that he's covering up for something and doing so with corrupt intent.
It still amazes me that people support this guy. He's just a total piece of shit. He lies constantly. He's racist. He treats women like shit. He has no self control and terrible judgment. He's inarticulate. He's a braggart. He's a total phony. He was a Democrat for most of his life but realized Dem voters would never support a man like him so he flipped. He's so far from what I want my son to grow up to be it's pathetic.