You're nuts, Nathan. The narrative they've got going throughout all the games is insane. Plus, the game's already taking place in America, it's just that you don't control Desmond outright. Then again, I'm a huge fan and my judgment may be clouded.
I just started ACII essentially, casper. Just acquired the mansion and had my second assassination.
Hearing it's going to be in America next makes me wonder if there will be story parallel's between it and the MGS series. The whole "the political world is being ran by forces unseen" lends itself to Kojima's storytelling.