What it will do is rise i interest payments on the US sovereign debt very significantly.
The US has two options, as far as I can tell.
1. Slash govt. spending (entitlements and defense) and rise taxes on the laptop class (that's us folks!)
2. Accept structural inflation and high interest rates.
The Dollar dominance is coming to an end, we weaponized it too much, so option 3, exporting inflation is out.
Politically 2 is easier, but in the long run disastrous.