Why is the US’ credit rating so exceptional despite the amount of debt it takes on?

Question

I’m a United States citizen. Moody gives the US a AA+ credit rating (it was downgraded from AAA in 2011).

How can this be, despite the substantial amount of debt the US holds that only continues to grow?

Is it GDP, defense capabilities, the dollar being the de facto currency almost worldwide? A combination of these? Or is there another huge factor(s) I am missing?

In: 54

Answer 1

Because the US, so far, never defaulted on its debt. And because oil is largely traded in dollars so there’s always demand for USD, which means demand for liquid instruments that can be turned into USD at short notice.