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.
Europe is always held up to us as some standard of excellence--well, in Europe you can still make a living (albeit subsidized) by working with your hands. Frankly, if we have to submit to being invaded and destabilized to keep the corporate bigshots happy, make me anti-corporate. How capitalistic is it, anyway, to be taxed to death to pay for workers' social services, so that the corporations can get by with not paying a certain wage?
Consider that a lot of this invasion is also financed by our recent tax cuts for the low-earning. They get a raise straight from Uncle Sam, which also benefits the lawbreaking employers. They pay very few taxes--only Social Security taxes are on a par with the rest of us. If a head of lettuce has to cost twice as much--that's just fine by me.