This whole line of reasoning is underpinned by such a fundamentally dim view of American[1] culture that it's hard to believe you and others who espouse it think yourselves its advocates. The unique, defining feature of our culture is precisely its ability to incorporate every other, and reproduce itself among them and their children.

The consistent lane you're looking for is "let come those that will. give them all the freedoms and all the burdens of being American, and that's what they'll become. The character of our places might change, as they have in the past and as they will again in the future, but they will be no less American as long as they're full of people seeking liberty, justice, and the opportunity to better themselves and their families."

[1] and it is _American_ culture, not Anglo-American.

> The unique, defining feature of our culture is precisely its ability to incorporate every other, and reproduce itself among them and their children.

First, you're conflating America's effectiveness in Anglicizing immigrants with absorbing foreign cultures, which has happened surprisingly little. Our national institutions remain quite Anglo, even though there's pockets of different cultures all over the country.

Second, most good things about American culture trace back to its Anglo roots: https://scholarworks.brandeis.edu/esploro/outputs/book/Albio.... Legalism, orderliness, disposition towards freedom and free markets, entrepreneurialism, egalitarianism, etc.

Areas where we've seen cultural change have been negative. For example, one thing we've lost is the WASP austerity. I know some older folks from New England who grew up learning that "food is for fuel, not enjoyment." Amazing! It's a downgrade that we lost that!

> and it is _American_ culture, not Anglo-American.

No, it's Anglo-American culture: https://www.youtube.com/watch?v=tINJhf1Zs1Q&t=618s. The Anglo countries remain incredibly similar to each other culturally and economically despite the U.S. breaking off from England almost 250 years ago. America is different from England in many ways, but in more or less the same ways it was always different from England.