That's the period before the US dollar was the world's reserved currency. If things go back to that point it will mean the US couldn't afford to borrow at low

That's the period before the US dollar was the world's reserved currency. If things go back to that point it will mean the US couldn't afford to borrow at low rates anymore and would lower the ability to fund the military / society. Before the war the unemployment rate was 25% in the US.