Nonetheless, Mueller found extensive evidence of collusion between the Trump campaign and Russia. The evidence was summarized in a report by Just Security. It uncovered multiple secret meetings and communications between the two, including, but not limited to. Trump campaign officials met with Russian agents in Trump Tower and were receptive to the offer of campaign assistance; Russian agents shared with Trump their plan to leak embarrassing emails; Trump’s campaign manager shared polling data with a figure linked to Russian intelligence; Trump appeared to have advance knowledge of the timing of the release of stolen Russian emails; and the campaign and Russia coordinated a response to Obama administration sanctions punishing Russia for its efforts on Trump’s behalf.
But because collusion is not a crime, Mueller refrained from stating an opinion as to whether this extensive pattern of furtive meetings in pursuit of a shared objective constituted “collusion.”
There was an investigation into whether Trump’s campaign colluded with Russia. That investigation was conducted by the bipartisan Senate Intelligence Committee. And that report found even more evidence of collusion, including multiple links between Russian intelligence and the Russian figures interfacing with Trump’s campaign. The Senate identified Konstantin Kilimnik, the business partner of Trump campaign manager Paul Manafort, as a Russian intelligence agent. And it found two pieces of evidence that “raise the possibility of Manafort’s potential connection to the hack-and-leak operations” — the most direct kind of collusion — that it redacted for national-security reasons.