Where are you getting this? I've seen people who came here, speak 0 English and their children speak very broken English. I'm going to bet that their children will speak very little English. They're coming here and building their own version of a "dome city" where they all gather around each other and have their microcosm of a society. They don't need to speak English to make it in this mini-society... but oh wait, we have to expand, because there are too many of them they need to be employed outside their little mini-society, so what happens? The rest of us have to bend over and appease them by learning their language instead of them learning ours. I know several hispanic families that only speak to their children in Spanish.