Re: Where's the substance?
"Some people bought adverts to affect the election. Either that's ok or it isn't, doesn't really matter who they are unless there are rules about limited spend or nationality."
That's the thing: it is illegal for foreign nations to do this.
No one (sane) expects that you can haul the Russian government into court for this but that is not the main issue. The main issue is whether US citizens assisted them in these activities - or even whether they knew because that is also a crime.
If, say, Jared Kushner and his fellows knew of these activities and provided targeting information to assist with the efforts then that is, legally, a big deal.