I think the collapse of the American Empire is no more preventible than the collapse of the British, Spanish, or Roman empires. The issues with the US being the reserve currency has been known for a while now (and was even predicted by Keynes before the Bretton-Woods summit):
https://en.wikipedia.org/wiki/Triffin_dilemma
Any discussion of "bringing back manufacturing" that doesn't mention government spending or social programs to educate and upskill the population is not genuine. The current leadership are fools and ideologs who will only hasten the decline, which might actually be better globally if it lowers emissions. Time will tell I guess.
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