Personally, I think this will result in illegal immigrants driven further into crime like forged documents, and into the hands of less scrupulous employers, and essentially into a black market for labor.
This is a distinct possibility Prince. The UK has followed a similar path (for example it is exempt from Schengen) and a lot of the people who have really made out are those who run human trafficking and smuggling rings as well as passport and document forgers (who tend to be citizens of the very country). For Britain it has been Turkish and Bulgarian smugglers who have become millionaires.
The problem is essentially the same as the War on Drugs. We are trying to prevent a basic economic transaction to occur through various means (ranging from brute force to physical walls). If you look at drugs, like cocaine, the basic transaction is A amount of cocaine for X amount of dollars. Now, if the profit margin of cocaine were very small
or the demand for it very small, then a small amount of Government intervention would remove it from the market. Either no one would want it or the profit would be lost in shipping it.
For illegal immigration the economic transaction is simply the need for labor on one hand and the need for work on the other. So the basic transaction is A amount of work supplied by Mexican laborers and X amount of work demanded by American employers. Again, if the Mexicans had plenty of work in Mexico or if there were no work demanded by American employers (or if both were very small) then a small amount of Government intervention would be necessary.
Yet, the results of "tightening the border" are going to be no different than the results of the "War on Drugs." I can promise that. You cannot stop a very basic economic transaction though Presidents and Congresses decades from now will be pouring billions of dollars into this as if it were the best thing since sliced bread. New technology (Britain uses some really state of the art equipment to find smuggled labourers) costs a great deal of money.
What amazes me is that people who supposedly believe in the free market, even "saint" Ronnie Reagan couldn't grasp such a simple fact as this about the War on Drugs. And now the same so-called free market folks are pushing the same thing on the border patrol.
It is getting strange when the Libertarian and the Socialist are the ones who see through this thing.