Your understanding about OIL is very out of date. The US is the worlds largest oil producer and a net exporter of oil and oil based products.
The US does import some low quality cheaper crudes (heavy, sour) to be processed by US refineries that have much higher complexity and capital investment than other regions. Effectively people send their OIL to the US to be refined and that is where most of our imports come from.
The US does import some low quality cheaper crudes (heavy, sour) to be processed by US refineries that have much higher complexity and capital investment than other regions. Effectively people send their OIL to the US to be refined and that is where most of our imports come from.