All empires have collapsed and the US has some of these similarities to Rome: decline in moral values and political cavility at home, over confident and extended military, and fiscal irresponsibility of central government.
Historically all Empires have come to an end but I think the American empire has quite a few years to run yet.
I'm not American so excuse me if you don't like my comment but I fear there is something self-destructive about the USA despite the 'Lets make America great again".
I think it's time for the good people to be heard