Again, you are talking about hispanics who came "here" from "there." It may have been several years ago...to them, if they grew up there, it was yesterday.
Its the kids who assimilate...they are the ones that grow up baseball Yankees fans (not soccer Aztecs fans). They are the ones that learn the language...trust me...it happened with the Germans, the Italians, Russians, Ukes, Poles, and the Welsh...it will most definitely happen with the hispanics...
The point is that if we weaken the English language by making everything in Spanish or other languages, there is less of a need for these people to assimilate. Voting, Driver's License Tests, etc etc, it makes it too easy not to have to assimilate.
Immigrants in the past had to go on the fast track because all these cruches were non existent, which was a good thing.