I don't think the thing is that well thought out. The illegals are just coming here and doing what's available, and the government (*cough *cough democrats *cough) is trying to pick them up as voters.
I'm totally against illegal immigration, but you have to consider that not all of the illegals do all of the things that were put forth in the scenario. Most of them do at least half, though. You also have to consider that many Mr. Legals violate the law and tax codes - maybe even claiming to need Welfare or Food Stamps. Most white American Welfare recipients that I've met didn't really use the money to support themselves in order to find work, either. They used tons of it to by beer, pot, and cigarettes, etc.
The AFDC dads are the worst. Every single one I've met felt like he was above working.