Trump Jr. himself admitted that Goldstone had stated in an email to him that the Russian government was involved and that the purpose of the meeting was to get "dirt on Clinton" and that the meeting concerned a "Russian effort to aid the (Trump) campaign." In early July 2017, it was reported that President Donald Trump himself drafted Trump Jr.'s initial misleading statement. The report was later confirmed by the president's attorneys.[8] In July 2018, the president denied knowledge of the meeting.
https://en.wikipedia.org/wiki/Trump_Tower_meeting
Sure seems like collusion to me.
Yeh, and as I said before, maybe you need to appoint a special counsel and give him unlimited power and resources for two years and see what he concludes. Oh wait...