Here is the US Constitution's definition of "treason":
Article III, Section 3
1: Treason against the United States, shall consist only in levying War against them, or in adhering to their Enemies, giving them Aid and Comfort.
Is Russia actually our enemy? On what grounds? There has been no declaration of war.
How then can Donald Trump, Jr. or ANYONE be accused of "treason" for any dealings with Russia or with Russians?
A real example of treason is Obama ad-Dajjal and Hillary Clinton destroying the sovereign nation of Libya and transferring its weapons to Islamic jihadists, who under the 2001 AUMF actually ARE our enemies.
Dear America - Chill out and get a grip. You are coming apart at the seams.