Ignoring the part where just running everything off fossil fuel is suicidal for the planet, the US actually isn't self-sufficient with just fossil fuels.

https://ember-energy.org/latest-updates/fossil-fuels-fall-be...

Renewables are cheaper to build out, and we're facing a massive energy shortage. We need to be building renewable production as quickly as possible just to keep up with demand.

Insisting that we use obsolete, expensive and dirty technologies while the rest of the planet modernizes is just dumb.