I agree.
I guess the Hispanic population in central New Jersey, many illegal, was much more transitory in the past. Now that it's become more difficult to go back and forth across the border, many are staying and enrolling their children in public school. They haven't made the commitment that Irish immigrants 100 years ago made to the place they are living and working.
The second class status is probably as much desired as it is imposed.
They say that one of the things that prevented the Puerto Ricans from assimilating for a long time was the $99 ticket to PR. They'd go back and forth so much that they never really committed to learning English and making a life on the mainland.
Other non-English speaking groups didn't have that option, and perhaps it was for the best.