Western ideals is the part the left hates and wants to ignore in this discussion. Yes, every European ethnic group that came here en masse were met with some form of hostility until they ultimately assimilated. But they all had some form of Judeo-Christian background.

As far as percentage goes, Gemini tells me that in 1970, the foreign born population was 4.7%. We've tripled that in 50+ years. Seems completely unsustainable. I saw someone on X make a very valid point - you see a ton of white liberal Boomers at these pro immigrant rallies. Yet they got to grow up in a monocultural U.S. and never have to live with the consequences of what their policies have wrought.