Possible self-rectification
Elite keeps serfs ignorant by providing no economics education.
Voters fail to grasp debt situation.
US soft defaults, inflation etc.
Dollar loses preeminence, 50% of value, the unwarranted part.
Massive inflation affecting all imports, which is most of what people buy, since America makes very little.
Inflation acts as wealth tax, and transfers value from old to young. Many factories move (back) to US. More jobs. Less inequality.
So, I think the demand for dollars from overseas investors who want safety really hurts the US. You could do all this without the evaluation if you would start seeing China as a threat and get protectionist now. Autarchy, in fact.