Huh, that is waht Bush is trying to do. Document these people so that they do pay taxes and yet you are against him for proposing that.
Also in the 80's I knew a family that sent care packages and money to communist Poland. I guess to you they were evil also.
I think without ranting you need to know my take. It's two fold.
The first is that we need warm live bodies earning less than $84,000 per year to replace the 40,000,000 we aborted since 1974 since we have a "pay as you go Social Security System". It's a matter of national security that we replace those earners. Mexicans cure our abortion policy problem and it's economic impact to Social Security.
The second take is Monroe Doctrine based and will eventually morph All of our countries into one EU style body. This will be slow, arduous as you say, and will take a good fifty years of incrementalism to take hold. Bush is saying that he supports it.
They will do what they always do; they will take from us an act like ingrates while doing it.