UK has been in bankrupt for years now , what has been saving them is indeed being the world's reserve currency , and that is obviously not sustainable which is why they looked into an option to change their currency , they know , but they never could.
22 trillion dollars into debt , almost a trillion dollar of fiscal deficit , most of which is "free" stuff in assistentialism , people think that the U.S spends most in Military , less than 150B are spent in military yearly , over 600B are spent in assistentialism yearly , do the math.
It's very simple little buddy , you see how you love "free" stuff , big tax on the wealthy and stuff??? none of that can work in general , unless you have a very anti immigration policy and a VERY homogenous population , Denmark has both of those , on top of being super tiny and super low population , that's why it succeeded massively.
U.S..... will have to just go back to its golden values , abolish almost all kinds of assistentialism and then they get to chose if they open immigration or not , they most likely will , but this certainly shows the hypocisy on the European side , specially the leftist.
So no , U.S will not just keep doing rollback , the world is already moving away from the dollar , and emerging markets are looking into a whole different picture.
I hope U.S Americans start saving in gold and silver to protect themselves because the next crisis will be far worse than the great depression.