If I am not mistaken, our immigration laws are being enforced, or at least an attempt is being made, for OTM (other than Mexican) at the moment.
They ARE NOT being enforced for Mexican ILLEGAL CRIMINAL INVADERS because NAFTA gave the Mexicans and Canadians the legal right to invade.
This also explains why there was no outrage when el Presidente Fox, had a booklet printed with explicit directions on how to invade the US, condemned the US for not allowing the ILLEGALS to vote, challenged Arizona on the passage of a law to restrict freebies to ILLEGALS in the world court ... it is all part of NAFTA, CAFTA, FTAA.
These lead to a couple of other "trade treaties" and voila ... no sovereignly, no country, just international rule and law under the UN. It is called ONE WORLD ORDER.