Yep. Do some google searches. You will learn about hospitals and school in CA, AZ, and TX that are all being forced to close because so many illegals are coming into the country and using these resources without paying for them.
For some reason, I seriously doubt that's the ONLY reason they're being shut down. I know teachers get crap for pay, and a lot of them are unhappy, and I'm sure many of them quit or something along those lines. Also, I'm just as sure that the demographics have just as much to do with the shut down as anything else.
But um .. regardless of what we can argue here, it's still happening and we can only speculate. :p
(And that money is still coming back to our economy whether it's taxed or not.)