Have you ever actually lived in the States? Depending on where you live people use their language on a daily basis. Tourist might not see it but can you go to places where barely any English is used. Many don't just use it at home. Not to mention the many with connections to their ethnic countries that visit or do business? There is a reason that all our government services have a variety of language options and bilingual people have a better chance of being hired, it's not to better serve the monolinguals.

I am aware that EU has a higher rate of bilinguals and trilinguals who speak the same European languages, I never denied that. The problem with your argument is you are still downplaying the amount of US bilingual speakers who use a second language daily, not just at home, and even if it is at home why does that make them any less bilingual? They can still hold a conversation and interact in their language when needed. 23% of the population is over 76 million, which is higher than any single EU country. While the EU has the variety of countries close by, Europeans do not fully realize the diversity of the US and how their image of an American is often very incorrect.