Yup, the US is largely self sufficient in oil and gas right now. However, if the US cuts the vassals loose, that's going to be disastrous as well. The US has significant dependence on trade with G7 countries, and if they start collapsing economically, then there's going to be blow back in the US as well. It'll likely be a bit more delayed, but I can't see how the US escapes this unscathed.