It's probably already done. Hispanics will be in the majority in the Southwest. Non-Hispanics will not have the votes to oppose anything they want to do.
That's the reality of what our open borders policy has brought us.
I don't disagree with a strong immigration policy at all. I just think that a lot of posters here have the wrong impression of the real effect of recently passed legislation and further, have the fantasy that radical ideas like Aztlan, have even a breath of a chance of ever coming true.