America is generous. If immigrants come in legally, on temporary work visas, and after a few tours of duty, with a clean record, are granted citizenship, they will be accepted, by all except the nativists, with open arms. After all, this is America. America needs to be renewed and energized by the aspiring and energetic from across the globe. Ameerica is an idea, not a race, or a tribe. That is what makes us special.
Let's take the tomato canneries in Stanislaus County as an example.
They were nearly completely manned by Mexicans when I was there last year, and according to my hosts (the owners), they'd been working there for years...in many instances there were three generations of the same family who had been coming and working the harvest for decades.
They all had papers, whether those papers were legal or not no one knew.
These people will never be squeezed out, they would literally have to be removed by the INS, and replaced with legal immigrants.
I'll tell you one thing however...legal immigrants will not spend three generations working at the same tomato cannery.
So after removing all illegal immigrants, and replacing them with legal immigrants who would, and now I'm using empirical evidence, rise above working as field hands in a generation or so...who picks the tomatoes?