I do, but despite the anti-Federal vibes, the US is one nation (I think).
Now if some Americans wish to secede from the linguistic hegemony I’ve got their back…
I think of the term “US English” as being analogous to “RP” which is normative, hegemonic, and very much class and ethnically narrow. RP is no longer usable (I think) in the UK. The US has a stronger current tradition of prescriptive grammar than most of the rest of the English speaking world. Which I have always found interesting: my American friends found some of the standards over here to be borderline illiterate (and I’m guilty of that!). The whole spelling Bee culture is… well it’s just weird to everyone else I think.
But you really did have the gold standard in journalistic writing