The oil imports of the USA have declined strongly over the last past years because the domestic oil productions increased massively due to fracking. Therefore the States are not longer dependent from oil imports than it was before fracking starts. You can also see this in official figures published on
https://www.eia.gov/energyexplained/index.cfm?page=oil_importsThe oil imports may be declining, but you should remember that the US is till getting almost one-fourth of its oil from abroad. And that is a huge amount. The only way for the US to become 100% self-sufficient in oil is to allow drilling in the Gates of the Arctic National Park and the other protected areas.
That's not the only way. The far better option is continuing to develop renewable energy so that nobody has to give a damn about oil anymore. There's no reason to drill in any protected area. We're not that hard up for oil. And once we're off it, or we've severely reduced our need, we can let the rest of the world wallow in in the misery of having a foreign policy designed around securing oil from the Middle East or elsewhere.