Our multicultural society only works when people value and identify with being American first and foremost.
multiculturalism = tribalism
Regression into a third world nation is the end-point. The USA is becoming Zimbabwe.
Most people will never be able to do that, ever. It's just human nature. They will always identify and group with the lowest common denominator -- race, family, religion, politics, etc. We've even seen hatred, true hatred, towards others just because they cheer for a different sports team. It will never change.