Citizenfour Snowden seemed paranoid and a bit full of himself. While I agree that the NSA surveillence state is something that needs to be brought to public awareness, I also think he was a low level nobody who wanted to become famous. The existence of PRISM was already widely known and wasn't much of a revelation, and many of his other revelations seem like exaggerations or outright tall tales. He spends half the film trying to look like some suave secret agent, gelling back his hair and wearing all black. The part where he takes the journalist's laptop under a blanket so no one can see the super duper top secret stuff he's doing is lol-worthy. I was also amused that his stripper girlfriend relocated to Russia to be with him. I guess she just couldn't resist being with this international man of mystery. Also, considering how many people on both the right (evil Obama!) and left (evil Republicans and their Patriot Act!) consider Snowden to be some kind of hero, I'm not sure the US has much interest in actually apprehending him. A trial would be unpopular and would probably just make him seem like even more of a hero.