I don't think the US or the EU has specific problems with "white nationalism" more than any other country.
You can't migrate to Arab countries easily if you come from sub-Saharan Africa. Is that "Arab nationalism"? No, it's just countries enforcing their borders and immigration policy. Effectively what pretty much every country does. You can't immigrate easily to most countries, it's the norm, not the exception.
I don't think the US or the EU has specific problems with "white nationalism" more than any other country.
You can't migrate to Arab countries easily if you come from sub-Saharan Africa. Is that "Arab nationalism"? No, it's just countries enforcing their borders and immigration policy. Effectively what pretty much every country does. You can't immigrate easily to most countries, it's the norm, not the exception.