If you import people who disagree with the fundamental premises of your country for economic purposes, you reap what you sow.
The US has always had immigration, including when that was written.
Not to mention plenty of Americans disagree with this “fundamental premise” of the country.
See legacy admissions at top schools, and businesses that hire only from top schools.
I don't know what point you think you're making. In a democratic (not necessarily a Democracy of which the US is not) country, people are allowed to disagree with each other, and they do. That doesn't change the fact that our laws are absolutely based on equal protection and equal treatment.
I never said I’m against immigration.
Sadly, never enough for the proverbial do-gooder class...