This country was founded on legal immigration. Go read the logs at Ellis Island. If they want to come in legally, I have zero problem with it. Break the laws and then I get pissed off
As far as farm workers - America's kids are obese because they aren't exercising. Get the little brats out there picking fruits and veggies for a couple of bucks an hour and solve two problems at once. Oh, I know, the ACLU would go crazy, but it would work