Donald Trump says that even if he did collude with Russia, it is 'not a crime'
He did actually say that, and he is right in a very technical and legalistic sense, but I think Trump misunderstands what Alan Dershowitz was saying, which is that no pertinent law specifically forbids "collusion" because "collusion" is not a legal term except in antitrust law. Nobody on the Trump team is guilty of violating antitrust law (that I know of), so nobody will be charged with collusion. The general term "collusion," when used by people not in the legal profession, is just a sloppy shorthand term which we probably should not be using.
However, if a Trump associate did work with the Russians to influence the election, they could be charged with various actual crimes:
* Donald Jr may have violated election laws by taking that meeting to get dirt on Hillary Clinton.
* If anybody in the Trump campaign helped or advised Wikileaks or the Russians about where to hack useful data from Democrats or how to create an impact by releasing it, they would probably have violated the Computer Fraud and Abuse Act.
By the way, I think Trump also has in the back of his mind the idea that Flynn committed no crime when he contacted the Russians, but only when he lied about it. That is not technically correct, but it might as well be. I think it is unlikely that anybody on the Trump team will be charged with any crimes for their actions during the period between the election and the inauguration. While Flynn, for example, and anyone who approved his actions, probably violated the Logan Act in theory, nobody has ever been convicted of violating that in the 200+ years it has been on the books, and a President-elect gets even more latitude than the rest of us, since he is expected to be preparing himself to take over.
So let's drop the use of the word "collusion." It's legally meaningless in this context.
And while we're at it, let's also stop our ignorant use of the word "treason." No member of the Trump team has committed treason. Frankly, it is pretty much impossible to commit treason in peacetime. The Constitution addresses this specifically: "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." In legal terms, the United States is not an enemy of Russia, but merely a geopolitical rival. Even Julius Rosenberg, the guy who wanted to give the atomic bomb to Stalin, could not be charged with treason because there was no war and Russia was not legally an "enemy." Rosenberg and his wife were tried and convicted of espionage, specifically section 2 of the Espionage Act of 1917, which prohibited transmitting or attempting to transmit to a foreign government information "relating to the national defense."
You MIGHT make a case for treason today if somebody revealed U.S. troop movements to ISIS, for example, but even that would require the prosecution to establish that ISIS can legally be called an enemy. At any rate, Russia is clearly NOT an enemy in any legal sense.