Actually i think that really is possible because they know they can't stop bitcoin's rise. So knowing the us, they always want to be ahead of anything. So they just might have gotten themselves some great amount of btc instead of doing all sorts of things and getting no reaults. Plus all the confiscated crypto currencies from all the big time illegal dealers that were caught, i think it's just fair to think of the possibility that this can really be true. That's just what i think though.