"Now, someone explain to me why this isn't treason?"
I guess for the same reason Kerry meeting with the communists in Paris in an effort to undermine our war effort wasn't. Isn't admitting to doing so, while still a uniformed Officer, considered treason? Heck Kennedy should be sharing a jail cell with Scot Camil....oh, &*((*&, lol, don't get me started....this deja vu can eatcha alive. Should have taken care of all of these people long ago, instead they're Senators getting paid for being traitors!
It's treason even if he had been a PFC (Private F'n Civilian) The difference is that his trial and punishment could be handled under the UCMJ and military courts-martial instead of in a civilian federal court.