Never mind there will likely be corruption and will have several "holes" for immigrants to pass through. After all, we always need a bogey man of some sort to point the finger at.
Also never mind that we never addressed why we need undocumented labor in the first place. The cost of food will go up likely. At some point the federal govt will have to subsidize food in order to make it affordable for middle and lower class citizens (for political reasons of course, you have to at least look like you're helping).
You have much more chance of the Chinese taking over than Muslims. They've already got their fingers all over Africa. When labor finally shifts to Africa, China will be ready. If we lose our trading partner, Mexico, China will be there. You know what the Muslims will be doing? Too busy fighting among themselves trying to determine who the real Muslim is. They are a collective nation of despots whose glory days are past them. We don't have anything to worry about them. The number of deaths blamed on terrorists on U.S. soil in the past 50 years is still less than how many get killed in car accidents in North America.
I don't mean to disrespect Muslims, who have had a profound effect on science and mathematics. But things went to hell as soon as they abandoned intellectualism and embraced a society that no longer valued those things. Manipulated by despots and foreign nations, oil has cursed them and it seems only religion is their only recourse. We seem to be headed in the same direction.
C'est magnifique, mais ce n'est pas l'Informatique. -- Bosquet [on seeing the IBM 4341]