On April 18, 2019, a redacted copy of Special Counsel Robert Muellers Report On The Investigation Into Russian Interference In The 2016 Presidential Election (Mueller Report) was released to the public. The Mueller report builds on the U.S. intelligence communitys conclusion that there were two campaigns to elect Donald Trump one run by Trump and one run by the Russian government. The Mueller report clearly identified collusion between the Trump campaign and Russia, despite repeated denials from Trump and many of his senior advisers and close associates that there were any connections between the two campaigns.
A total of 272 contacts between Trumps team and Russia-linked operatives have been identified, including at least 38 meetings. And we know that at least 33 high-ranking campaign officials and Trump advisers were aware of contacts with Russia-linked operatives during the campaign and transition, including Trump himself. None of these contacts were ever reported to the proper authorities. Instead, the Trump team tried to cover up every single one of them.
https://themoscowproject.org/explainers/trumps-russia-cover-up-by-the-numbers-70-contacts-with-russia-linked-operatives/
Trump's public statements:
Being told about the Trump Tower/Russia meeting before and afterwards
Trump called for Russia to hack HRC and the DNC
Trump talked about Russian help in getting him elected
Trump said he was fine with Russian help in the future