At best this makes great news headlines. The justice department ultimately have to prove there was a mutual act of conspiracy between the Russians and Trump's campaign organisers and that it influenced the US election. It's all conjecture at this point.

But, just the appearance of Russian interaction can be damaging enough. If the investigation does reveal anything it might embarrassing to Trump but I would be surprised if they could prove undue influence over the election. It might provide enough intrigue for another Oliver Stone political conspiracy movie.... "Natural Born Doofuses?"