Another good read on our subject is Victor Davis Hanson. Here's a good transcript on his book "Mexifornia" from Booknotes on Cspan.
http://www.booknotes.org/Transcript/?ProgramID=1747&QueryText=Mexifornia
~snip~
"LAMB: What`s the responsibility -- legal responsibility, if they`re in this country illegally, when it comes to health care and things like that?
HANSON: Well, there is none. That issue`s already been adjudicated. When the population of California voted under 187 to deny illegal immigrants state entitlements, that was overturned by a federal court, I think on the basis that part of the funding was federal funds, and the federal government hadn`t made that decision. It was usurping federal control. But so it`s wide open. And because we are -- despite the invective, we are a liberal, humane society, when somebody comes into the Salma hospital, as I went in the other day, and he`s stabbed or shot or hurt or falls off a ladder, he`s going to get the level of care that we can provide, and he`s not going to be able to pay for it. And the only way we`re going to explain that is that he works hard and perhaps he paid taxes. But if we look at statistics, given the nature of unskilled labor, the entitlement is costing the state five times more than the person`s contributing in taxes."
This is from the House Ways and Means committee.
http://waysandmeans.house.gov/media/pdf/ss/mexicofacts.pdf
The second to last paragraph on page 1 basically says that we are in trouble if the estimate of 25% is wrong. The last paragraph on page 2 also talks about the billions that this boondoggle could cost us if our government has underestimated. This has a very huge potential of breaking SS.