Fallen, but not finished. No more than stupid stories out of the US means America is finished.
A lot of people would argue we have passed our peak. Too many moochers relying on the government here means they are also willing to sign away their God-given rights for a free meal. Looking at the big picture, the British empire fell and the decline followed decades later and the same will probably happen here. The decline is not complete by any stretch but I don't see it turning around.