If you read the indictment carefully it establishes that a group of Russians organized and carried out a systematic effort to influence voters thru social media and fake news. What it didn't do is implicate any US citizen, at this time. By establishing the basis for a criminal enterprise operating in the US to influence public opinion and influence the election Mueller has defined the foreign aspect of the issue. What he did not address in the indictment is what other organizations or individuals either foreign or domestic may be tied to this criminal enterprise. This is a tried and true tactic of prosecutors that has been used countless times to go after organized crime networks and drug cartels; establish that there is an organized criminal activity and then shake that tree for any individual that may have any involvement with it not matter what the circumstances. (My grandfather was a federal prosecutor that convicted over 20 mobsters in his heyday and after he retired he loved to talk shop and that was the way he operated.) Mueller purposely limited this indictment to foreign nationals ATT- a very smart move. If I was a member of the Trump campaign I would be going over my contacts and activities (with my legal council of course) to determine if I am vulnerable to any of this. Maybe that's why most everyone in the WH and the campaign staff has ponied up hundreds of thousand of $$ to lawyer up. If I was in their shoes I would need more than just Ambien to get a good nights sleep.