They will all speak fluent English in one generation. I employ several legal immigrants, some who are US citizens including a Cuban political exile. They all want to learn English, but will never learn it well. However their children are all fluent in English, and are somewhat successful in school and will be positive, productive additions to our country. This is generally the case with most permanent immigrants that I have encountered, whether they are from India, Turkey, Korea or Mexico.
Well, obviously you haven't been to the growing barrios in Ventura, Los Angeles, Orange, Riverside, San Bernardino, and San Diego counties of California.
I've never gotten an answer to these questions?: How many can the US absorb before losing/lowering its generally high standard of living? 100,000 a year? 1,000,000 a year? 10,000,000 a year? 100,000,000 a year? Do we even have the moral right to want to maintain that standard of living with so many poor in the World. And if we do, where's the cutoff before the ship sinks? Think Europe.