English is the language of business worldwide.
Get over it.
That's the way it is.
People who speak another language and learn English have an advantage.
People who speak English and learn another language... not so much.
Except if they are in import/export or other international business. Which I assume you are.
But as another poster pointed out... all speaking the same language unites us.
Being bilingual is great. But if you're going to live in the USA - one of them should be English.
I think we all agree learning English should be a prerequisite for people...
That stated, I think people are overreacting a bit to first generation immigrants inability/lack of desire to learn English as a sign that the particular culture will never assimilate...that view ignores reality and what has happened with every other culture that has come here.
English is language of the business world if you exclusively do business in the United States. Even then not really. If you want to target your entire market, you should consider the portion that does not speak English.
I have to disagree with you on those who speak another language and learn English have a greater advantage than the other way around.
Look at most of the classifieds in major metropolitan areas. You see statements as "bilingual (English/Spanish required) Portuguese a plus."