>>Ambigous language everywhere -

Yes. Especially the word "solicit" that means to ask for or try to obtain. Intent is enough to satisfy this definition. Did Trump JR try to obtain dirt on HRC? Difficult to claim otherwise in view of his reaction to the offer of dirt on HRC from a Russian lawyer: "I love it."

My preference is to look at the intent of the law. The intent of that law is to prevent foreign interests or cash corrupting the electoral process to obtain a result of benefit to the foreigner. As you note, when both sides can be expected to be sniffing for dirt on each other, whether the dirt comes from locals or foreigners is immaterial and it's them doing the influencing, not the foreigner. IMHO Trump JR was naive and silly, because he did not need to meet the lawyer personally to get her dirt. A mistake HRC didn't make when she paid for Russians to tell pee pee stories about Trump.