There is nothing illegal or improper with someone having contact with Julian Assange or WikiLeaks. Julian Assange is not a Russian asset and WikiLeaks is not a Russian propaganda organization. I understand that the US intelligence agencies insist otherwise but they are utterly unable to prove it. It’s true in their minds because they wanted to be.
Contact between Donald Trump,jr.. and Julian Assange certainly does not constitute collusion with the Russians!
In fact Assange is a journalist publishing information given to him by sources just as they do at the Washington Post and the New York Times but Wikileaks record for accuracy and authenticity is far better.
Neither Donald Trump Jr. or Alexander Nix of Cambridge Analytica did anything inappropriate. Having tried so hard to drive the phony Russian collusion narrative to distract from their own Russian profiteering (Uranium One, Gazprom, Joule) they make casual contact with a first-rate Journalist muckraker treason.