[…] investigation did not establish that members of the Trump Campaign conspired or coordinated with the Russian government in its election interference activities.

Source: U.S. Department of Justice, Volume I, Volume II

Note: AKA The Mueller Report

Per Wikipedia:

The Mueller report is the official report documenting the findings and conclusions of former Special Counsel Robert Mueller’s investigation into Russian efforts to interfere in the 2016 United States presidential election, allegations of conspiracy or coordination between Donald Trump’s presidential campaign and Russia, and allegations of obstruction of justice. The report was submitted to Attorney General William Barr on March 22, 2019, and a redacted version of the 448-page report was publicly released by the Department of Justice (DOJ) on April 18, 2019. It is divided into two volumes.

Wikipedia (en.wikipedia.org/wiki/Mueller_report)