Dittoes--what has also steamed me about the employers of illegals is the air of charity they put on when they make slaves of them, burden the social services--"Oh, they're so eager to work."
Their eagerness makes the lawbreaking employers feel all warm and runny inside--"I'm so generous, so good to the poor downtrodden wetback..."
I really, honestly hear this sort of thing from people getting their lawns mowed for a disgracefully low sum of money--just because they're willing to break the law.
Imagine if it worked the other way. You walk into a Wal-Mart and decide the toasters are too expensive. So you steal it. Hiring illegals because you can't attract legal workers with what you're willing to pay is the same thing.