many areas in this country and you will find so called "true" Americans still eating spaghetti, kielbasa, gyros, and SPEAKING ENGLISH!!!!!!!!!!!!
I speak English just fine. Probably better than my Spanish.
I can guarantee you though that I make more moeny at my chosen profession because I speak both languages.
My family and I consider ourselves to be American, that does not take away from the fact that we are also Cuban. There isn't a problem with being both.
BTW...I work for a Japanese company where the Japanese employees speak Japanese between them. It doesn't offend me, freak me out, or think that they are talking about me. I accept it and move on.
Get over it. We are different and there is nothing wrong with that.