>Then there's of course the fact that almost nobody (with citizenship) actually wants to pick crops...

This is complete bullshit and needs to quit being touted. Americans are not afraid of hard, back-breaking labor. I grew up in the Midwest surrounded by corn and soy beans (and not too many illegal or legal immigrants). Tons of my white, middle class friends went out into the field to pollinate corn in the summers or went down to strawberry fields to pick when they came in season.

What a sheltered life you must lead if you've never met an American that does manual labor or works in a field...