There's nothing to go down for. They did nothing illegal.
Multiple guilty pleas and convictions months and years before Mueller's investigation is even finished tell a reasonable person that there's more to come. The Trump Tower meeting was clearly illegal, and conspiracy is a crime. Kushner and Don Jr. were both there, and Trump himself admitted the reason for it. Also, as of now, Trump himself is an unindicted co-conspirator with respect to violation of campaign finance laws (see Michael Cohen).
Returning to the illegality of the Trump Tower meeting though, I've looked up the statute in question that makes the event unlawful, and the plain language can be fairly said to be damning (see § 110.20 Prohibition on contributions, donations, expenditures, independent expenditures, and disbursements by foreign nationals (52 U.S.C. 30121, 36 U.S.C. 510)).
You can read it for yourself. It's readily available online. However, what's notable is that there's no case history for the law. On Westlaw, a legal research site, following every statute/regulation at the bottom of the page is a "Decisions of Note" link which takes you to case history so that you can determine how the law in question has been interpreted, under what factual circumstances, what issues were at stake, and what the outcome was.
There's nothing there for this statute. I can't say no one has been prosecuted under this law since it was implemented back in the mid 90s or so, because Westlaw may have decided that no relevant caselaw exists that's worth mentioning in connection with the statute. Or it's possible that it has been brought against a defendant, but not litigated--the defendant pleaded to a lesser charge or the case was dropped. The point of bringing this up is that since the law's passage, not a single U.S. politician has been tried for doing what Don Jr. and Trump himself have now so clearly admitted to. That speaks to their enormous arrogance and willingness to simply disregard a law they had notice of.
There are several other associated statutes in play here as well. That is, if you're charged with A, then you're probably going to be charged with B and C. These appear to be fraud/misrepresentation laws. But I don't have time to look those up and it would get too lengthy anyway.
Seriously, it would serve aniti-Trumpers well to put this silliness behind them. This is what he and his followers feed off. It's time to starve the beast.
The Trump Tower meeting also constitutes conspiracy between the Russians, Kushner, Jr. Trump, and Manafort. Conspiracy is an agreement to commit an illegal act, having the specific intent to commit the object crime, and in most states now, there must be an overt act in furtherance of the conspiracy. Guess what, there's a federal statute for conspiracy, although the "in furtherance of" requirement is somewhat murky, but that decidedly works against Trump because clearly, the act of meeting with the Russians was an act in furtherance of, even if the federal statute doesn't require it.
I could go on with this stuff. Do you now understand that this isn't "silliness"? And what you also need to begin to consider is what the future ramifications will be if Trump, Jr., and Kushner aren't held to account for these things. Hopefully you'll reflect on that a little.
