Why are white countries the only countries that aren’t allowed to make immigration difficult or impossible and preserve a national identity?

I don’t see Saudi Arabia or China being criticized for not allowing foreigners to become citizens and preserving their Islamic and atheist cultures. Nobody talks about China enslaving poor countries with debt. Nobody cares about the rise of nationalism in Japan.

I don’t see the extremely conservative governments of Africa getting criticized.

But if an American president wants to put America first and make us independent he’s literally Hitler.
Why are white countries the only countries that aren’t allowed to make immigration difficult or impossible and preserve a national identity?
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