> So if USD goes up, tax collection go up Currencies going up usually leads to a reduction of exports which subsequently leads to an economic downturn, which l

> So if USD goes up, tax collection go up Currencies going up usually leads to a reduction of exports which subsequently leads to an economic downturn, which leads to less taxes. Apart from that, mass sell offs of government debt leads to increasing interest rates. You can buy that off with quantitative easing but probably that has limits too.