Yeah there is no crime. If it was a crime to know of the meeting then Don Jr would be in trouble legally for having the meeting which of course isn’t a crime. Mueller didn’t even investigate the female Russian lawyer because there’s nothing there
We know now that it was an entrapment operation. The Russian lawyer lady had been previously banned from entering the country. She was given a probationary visa in the winter of 2015 and then granted a business visa later in the spring of 2016. To get a business visa so soon after being on probation is highly unusual. She was in the country with the blessing of DOJ/DOS. She met with Glen Simpson/Fusion GPS before and after the tower meeting.