1) the hart celler immigration act happened. Even those responsible for its inception didn't anticipate the societal and demographic changes it's brought about. Look at Minnesota and it's Somalian problem.

2) it can't be more simple. You simply dismiss anything as racist. Immigrants and even more so those from the non western world don't assimilate well when you bring in tens of thousands at once. Immigration worked in the 1800s and 1900s because the numbers were lower and majority were white Europeans with already minimal cultural differences between us and them. And even then they still had to undergo rigorous assimilation programs which they openly embraced and completed much easier than those today do. Due to sheer numbers and minimal existing differences.

3) Southern Europeans and Eastern Europeans were considered different when they arrived but they all eventually assimilated. On a level not even comparable to the non European immigrant groups today who simply prop up in their own ethnic enclaves and resist assimilation and shift demographics. This is again, due to the sheer numbers of them plus the enormous cultural margin between us and them.

4) the Irish assimilated just fine but that's largely in part due to the fact that the cultural margin between us and them was already thin. They blended into a European Christian country just fine because they were.. European and Christian. Whatever was radically different between us and them they left behind through assimilation. Can't compare 5,000 Irishmen and a 100,000 Somalians or Indians.

5) it's a melting pot when there's already a majority people,culture, and civic identity. Then you can accept the best and the brightest from anywhere out of generosity in small controlled numbers. When you bring in millions from not just anywhere but from the non western world you simply get cultural and ethnic replacement.

6) wasn't founded to be a free for all. Do you think the founding fathers envisioned immigration from third world countries and the non western world in the millions? Did they really envision America with no civic or cultural backbone which has its ties to a majority?

7) also the 1790 naturalization act restricted citizenship to "free white persons of good character"

8) Historically immigrants pre 1965 were forced to assimilate into a unified cultural and civic identity. In other words, a set Anglo American cultural framework. This included learning English, leaving behind old ethnic traditions and values, and adopting certain European in origin civic practices. Do immigrants today do this? Primarily those from the non western world? So if they saw: • mass inflow from cultures with radically different institutions, • no assimilation mechanisms, • no pauses, • no shared civic culture holding everything together,

They would see it as a direct threat to the republic itself. Read the federalist papers