The funny thing is, his economic argument is spot-on, and you and others refuse to acknowledge that.
Face the facts, er.... "Dude."
The first fact is this. The reason the illegals come here, is because Americans PAY them to come here. They wouldn't come here if Americans weren't throwing money at them.
The second fact: illegals are a whole lot cheaper to employ than Americans are. To a thinking person, the preference for cheaper labor just might suggest that Americans are overpriced for the world market. You'll find the evidence not just in the market for illegal immigrants, but also in the massive outsourcing of formerly American manufacturing jobs.
The third fact: folks can bitch and moan about how much illegals cost, in terms of social benefits; but the fault for that lies with Americans -- primarily state and local politicians. Perhaps the bitchers and moaners might try fixing their own political problems.
The facts are OBVIOUS. Perhaps you should figure out how to deal them.