I've come to the conclusion that it isn't treason

[Voltaire2]

16. the word "adversary" simply is not in the definition of treason.

Treason against the United States shall consist only in levying war against them, or in adhering to their enemies, giving them aid and comfort. No person shall be convicted of treason unless on the testimony of two witnesses to the same overt act, or on confession in open Court. The Congress shall have power to declare the punishment of treason.

The confusion is over the phrase "adhering to their enemies, giving them aid and comfort."

ADHERING. Cleaving to, or joining; as, adhering to the enemies of the United States.
2. The constitution of the United States, art. 3, s 3, defines treason against the United States, to consist only in levying war against them or in adhering to their enemies, giving them aid and comfort.
3. The fact that a citizen is cruising in an enemy's ship, with a design to capture or destroy American ships, would be an adhering to the enemies of the United States. 4 State Tr. 328 ; Salk. 634; 2 Gilb. Ev. by Lofft, 798.
4. If war be actually levied, that is, a body of men be actually assembled for the purpose of effecting by force a treasonable enterprise, all those who perform any part, however minute, or however remote from the scene of action, and who are leagued in the general conspiracy are to be considered as traitors. 4 Cranch. 126.
A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Publis

http://legal-dictionary.thefreedictionary.com/adhering

It doesn't apply to nations or organizations we are not at war with.

MYTH NO. 2
Aiding Russia is treason against the United States.
Stephen Colbert’s recent segment “Michael Flynn’s White House Tenure: It’s Funny ’Cause It’s Treason” was but one of many accusations of treason hurled against Flynn and other White House associates because of their proven or alleged ties to Russia. “Consider the evidence that Trump is a traitor,” exhorted an essay in Salon. It is, in fact, treasonable to aid the “enemies” of the United States.

But enemies are defined very precisely under American treason law. An enemy is a nation or an organization with which the United States is in a declared or open war . Nations with whom we are formally at peace, such as Russia, are not enemies. (Indeed, a treason prosecution naming Russia as an enemy would be tantamount to a declaration of war.) Russia is a strategic adversary whose interests are frequently at odds with those of the United States, but for purposes of treason law it is no different than Canada or France or even the American Red Cross. The details of the alleged connections between Russia and Trump officials are therefore irrelevant to treason law.

https://www.washingtonpost.com/opinions/five-myths-about-treason/2017/02/17/8b9eb3a8-f460-11e6-a9b0-ecee7ce475fc_story.html?utm_term=.593948d28bc5

Some other critics of the administration, including Sen. Tim Kaine, a Virginia Democrat who was Clinton's running mate, have suggested the President's son might have engaged in treason by dealing with a foreign adversary -- but that is a possibility that many legal analysts reject.
Both Constitution and federal law covering treason provide the United States be actively at war with the foreign adversary for such a charge.

[link:http://www.cnn.com/2017/07/11/politics/trump-jr-legal-problems/index.html