Very interesting. Perhaps, since the US is large and population density is (compared to many countries) not so high, this model might lead to more harmonious relations between the different “warring” factions in American society. Less civil unrest, fewer marches, protests, etc. A sort of calming voluntary segregation.

Given the country’s vast size compared to European nations, and individual states latitude for difference, I can’t help but think efforts to homogenise are both unnecessary and unlikely to succeed.