There's a difference between ethnicity and language. In the US, we have a heck of a lot of different ethnicities, but with certain exceptions (Acadians, Aroostook County ME, Immigrants--who we expect to eventually, in the course of time, speak English). The Basques are not immigrants who chose to come to Spain, they are a separate people with a separate language, and thus deserve to have a separate nation in my opinion, if they so choose.
What's so important about language.
Eh, you should go to the Southwest or certain other parts of the country to see the importance of the English language in this country.
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