Cannibal, it seems to me the issue is whether or not a kid learns English, not whether he should be in the U.S. Sure, I don't want illegals here, but if a kid's in school, he oughta get a U.S. education and that requires knowledge of English. So, what works is good; what doesn't work isn't.
By the way, it was deliberate policy in the Rez schools back in the late 1800s and eqarly 1900s to try to pretty much end the Indian knowledge of their own languages. It didn't work, but it was tried.
Sorta at a tangent to the issue of languages, but I've always thought that one of the dumber parts of the U.S. educational system is the lack of study of foreign languages earlier than high school. After all, to an infant, any language is foreign. While most of us won't need foreign languages here in this country, I compare us to many Europeans who speak and write in several languages.
A lady I knew in Paris, almost 50 years ago, was fluent in French, Italian, English and Swiss. She was learning Russian in anticipation of a trip to Moscow to visit relatives in the Embassy there. She had some Spanish, and understood a fair amount of Japanese. Most of her friends were polylingual, as well, although they took pity on this poor Ami who was limited to English. And, I met a fair number of Scandinavians who were fluent in German, English and French as well as their native tongues...
Polylingual people can command higher salaries in the world of business. My daughter-in-law is doing well in Germany because of her fluency in English.
Were my son still a kid in school, I'd sorta push him toward foreign languages and business courses. Chinese and Spanish, as well as European...
No matter where you live in the U.S., you can add to your income if you can speak Spanish as well as English. People tend to patronize businesses where they can communicate. Sell more guns, that way.
, Art