Meeting to seek out opposition research is NOT illegal.
No Crime.
No Evidence of A Crime.
No case.
Trump admitting that the purpose of the meeting between his campaign chairman and a Russian operative was to collect information against Hillary Clinton is most definitely evidence.
Trump dictating lies on that meeting to be told to the public is most definitely evidence.
Trump’s personal attorney admitting that Trump was aware of the meeting is definitely evidence.
The Trump campaign colluded with the Russians. And then lied to try and cover it up.