Interesting, to be honest I'm surprised Treason hasn't come up yet. The terrorists he's buying guns from (ie giving them money they need to conduct their operations) apparently have the expressed goal of taking over The Philippines, the Philippines is a US territory (ie it's basically part of the USA, even if it's not a state, sort of like Puerto Rico or American Samoa). This does mention some kind of peace treaty was brokered between the terrorists and the government, but still this MILF group (I can barely use that acronym with a straight face, sounds like a joke from a spy parody) stands for what it stands for, even if it's allegedly not actively fighting us.
I thought more was going to come out of this over Chinese Intelligence, but that was always rumor and speculation. This does explain some of the rumors though. As I said in earlier posts if you do a search for "Chee Kung Tong" you'll see it being used in the name of a lot of businesses, as well as being tied to a fairly ancient masonic order (which spins off into all kinds of occult stuff). This at least mentioned the "legitimate face" of the organization. One of the big things (and why I remembered the name) was that allegedly CKT was long suspected of being at least partially a front for Chinese Intelligence and moving their agents, money, weapons, and building infrastructure in the US. Of course this is a domestic bust by the FBI, so other than the part where they followed Yee to his dealings over seas it makes sense they wouldn't have been digging into the international aspects of the rest of the business (at least not in a Yee-focused document). One thing I suspected and am sort of relieved to see didn't pan out was that it was going to turn out that Yee worked for the Chinese government (given that he was born in China, and was apparently working with Chinese organized crime suspected by some theorists to also be tied to Chinese intelligence) but apparently he's just a corrupt patsy, the way this portrays him I doubt he was trained/planted by anyone... which is a good thing.
That said, while it hasn't been done for a very long time, I do think treason should be on the plate. I mean I'm sorry, you don't have to be a spy for another country for that to make sense. The dude was still brokering arms deals that were putting money in the hands of a group with the stated goal of seizing control of a US territory.... it doesn't get much more treasonous than that. See if he was just a hypocrite and was say running guns between two gangs or something in the US I'd say the charges were fine, but when this goes as far as terrorist organizations with big goals, I think the guy needs to be put down (if he's convicted) I don't want there to be any chance of the guy getting put in some federal country club for a few years and then being let out. If the US was a bit more barbaric I'd say if he's convicted they should pretty much take his head off with a machete in front of CNN's cameras... sort of like MILF apparently did to some US soldiers... but we aren't, so I guess we won't see that bit of poetic justice, if he was convicted of treason he'd probably just spend the rest of his life on death row (but at least it would insure he'd never go free).