I'm rather curious where in the US HP and Dell source, let's say, their displays?

And while many (but certainly not all) of the other components could be made in the US, it's expensive and capacity is limited. So even the likes of HP and Dell have most of it done in Asia. Even Intel chips generally pass through Asia for assembly and testing, and their modern CPU tiles are likely to include TSMC-fabricated components.

All this is to say: the US is not tech independent (unless ancient tech counts). No single country is.

Though if you're just trying to say that the EU is significantly more tech-dependent than the US then I agree of course.