@Joe Nation,
My wife is Puerto Rican and she and her family speak Spanish all the time. I wish I was more fluent, but my kids are. Most importantly though, we all speak English fluently.
This may be hard for you to accept but the vast majority of those who favor the assimilation of immigrants do not insist that immigrants speak only English, and actually enjoy the cultural influences they bring to our country.
I grew up in NY and don't need to be schooled on the benefits of a cultural melting pot. I now live in Texas where Mexican cultural influences, clearly, have been embraced.
Surely though, you've heard the tale of the Tower of Babel. Your roof top parties are, no doubt, loads of fun, but unless they are simply orgies, the fun can't be sustained if everyone there is speaking a different language.
It is, undeniably, problematic wherever there are more than one "official" language. When public signs are printed in a place that isn't economically dependent on tourism, in more than one language, there is more than one "official" language.
We have at least two examples of nations with more than one official language (Canada and Belgium) and I'm sure there are more. We can see the problems.
I am a 3rd generation immigrant: Irish, Norwegian and German, and my grandparents all spoke the language of their native lands.
When they came to this country though, their parents all insisted that they not only learn, but always speak English. Alas this ultimately meant we lost Norwegian and German in our family, but they and their families were far better off for their focus on speaking the language of their new home.
Mexican immigrants should try to preserve their fluency in Spanish, but not at the expense of their learning English, and our government does them no service in enabling them to get by in America speaking only Spanish.
If you live in America and can't speak English you have no hope to do more than get by.
There have been enough studies to prove that enabling immigrants to hold on to their native language as their sole means of communication is detrimental to their chances for general success.
Making it easy for latino immigrants to get by with only Spanish is ridiculously hurtful to them despite all the sanctimonious intentions, but multi-culturalist, liberal twits find it irresistable.