When it comes to fossil fuels, there's no such thing as 'energy independence' because fossil fuels are traded on a global market. In addition, not all oil is the same. So you have to trade it because what you can extract may not be what is useful to you, but useful to someone else.

In short, the US cannot functionally be independent on fossil fuels even if we extracted every drop of oil within our borders--because we literally cannot use all of it, and most of it would be wasted just sitting around.

That makes no sense at all. We just had a post about several countries with energy independence who had done it with zero extractable resources. For them, the magic key was having tons of hydro and a small population. They just stopped importing. Countries like the US will need a lot more power and a lot more diversity of generation but it can be done if there was enough will to do it.