We already know they've been spying on politicians and tapping the underwater Internet cables, along with their friends from other continents, to get all the data. So how much worse could it get? Proof that US has been assassinating politicians (in recent times)? I think something like that would be a "worse nightmare" than it already is (don't forget Snowden worked for CIA before).

Now I almost want something bad to happen to Snowden, just so we find out what could possibly be "much worse". It's time for all US' power games to be shown in broad daylight.