But you have to remember that in the past those large influxes of immigrants WANTED TO BE AMERICANS. They assimilated. The Mexicans don't want to do that.
This charge has been leveled against every immigrant wave since the mayflower. It was untrue of the irish, it was untrue of the poles, untrue of the italians, the germans, the jews, the vietnamese, the chineese, the japaneese, and it's untrue of the Mexicans.
The Irish, Poles, Germans, etc. had never had everything printed in their language. They had no welfare benefits and most importantly, they came here LEGALLY!