If the US splits in the near future, it will probably be based on right wing or left wing ideology...not religion, race or ethnicity.
The US is not some one of a kind cultural melting pot. Melting pots have existed in different parts of the world for thousands of years (India, Africa, etc).
@deep_333 I agree. It’s hard to get diverse populations to get along much less see eye to eye. But that’s pretty much what this country is about and supposedly makes it great and a place diverse peoples want to live in...all that melting pot stuff. Maybe we are doomed to fail in the end, or maybe we truly are "great" and make it so. Nothing lasts forever. THat much is for sure.