There is always the possibility that some people, even some US citizens, want the end of the union of American states as it exists today.
Maybe, for these people, the size of the US has nothing to do with their political dreams and desires.
In the UK we have devolution.
This means that Wales and Scotland get their own parliament or assembly (e.g. Jeremy Corbyn is an MP but Nicola Sturgeon is an MSP, Member of Scottish Parliament).
Wales has the Welsh Assembly.
Now take England. The same people who are for Wales and Scotland having their own parliament/assembly are very quiet about the same thing applying to England - and at least partially as a consequence England doesn't have her own national assembly or parliament. But these people or similar people are in favour of England being divided up politically into areas. England is a tiny country so it can't be because it's considered too big.
Thankfully, England hasn't yet been politically divided up into areas.
I'd imagine a majority of English citizens are against this absurd idea ...