John, you have a point or 2 correct in this and waaaaay off in others.

NAFTA and large corporations are certainly partially or largely to blame. NAFTA was BS here and we Texans knew it and siad so, didn matter, still came to pass, much to our chagrine I assure you.

The illegals COULD be stopped if the border were enforced. Completely, I doubt it, but the tide could certainly at least be stemmed. The biggest reason the problem has reached the proportions it stands at now is that we DID NOT secure the border years ago, plain and simple.

Scaring us into thinking their taking our jobs, hardly. However, if you lived here you'd know how the influx of these workers has changed the face (and overall quality) of the construction trades or know that their inability to expect fair treatment by employers over fear of bein fired as they work along side other American workers has indeed influenced many industries stance in how they treat employees in general.
Though I can't speak for any other state than my own, the penal system here makes the inmates at least somewhat self sufficient, though by NONE of the means you suggested.

I do know that everyone of us in the US are immigrants or descendents of immigrants except for the native Indian population here John. I also know that there are set in stone regulations regarding naturalization here which serve to intergate immigrants into our society and tax base so that they can contribute to the country they reside in that are being flatly circumvented and that is NOT ok by me. And yes, when this process is avoided they are indeed ILLEGALLY doing so, which makes them both "illegals" and in fact criminals.

If you want to live in this country, make a life here for your family, is it really too much to ask that you contribute to the country that you live in ?
Lastly to second Anonymous@119234s thoughts, hell yeah, learn the fucking common language here, just as I'd do were I living in ANY other country on the planet, it's really nothing more than common courtesy to those around you.