

Pro-business/anti-regulation types teamed up with the anti-abortion types around 50 years ago in order to get votes for their unpopular ideas, then they did everything they could to conflate the two ideologies to where Christians (the dominant religious group) now think Republican=Christian=Republican and thus ALL Republican ideas intrinsically align with their religion. I.e., Jesus was a capitalist rather than anything that’s actually in the bible.
Tl;Dr: propaganda and the natural human tendency toward in-group bias.
So, like, … maybe 50 or so smaller regions? And a few other mostly even smaller territories that don’t get those rights, just for funsies?
I joke, of course. But in seriousness: Are you suggesting the US just defederate and become more like, say, the EU? What are you anticipating that would solve? Moreover, what is it that makes it too big to be a democracy? Can large governments exist only in authoritarian forms? Why would that be?