Not sure if I've seen it on this thread or one of the other 29837 that look just like it but people often talk about illegal immigrants and how those jobs wouldn't be taken by Americans. There are a few problems with this. First, those immigrants often come in bunches, living together (in pretty terrible conditions, fwiw) and are able to get some level of economies of scale in their living arrangements, i.e. rent divided by 8 < rent divided by 2 or 3. There are usually some level of tax games being played by the employer and employee which boosts their real take home pay that aren't legal. For those jobs to be meaningful jobs which get people a wage reasonable to live of off, the ag companies would have to boost their payroll greatly which would just mean they'd jack up their prices to offset the additional expense. Right, wrong, or indifferent, our society has demanded cheaper goods over time with companies typically having to adjust their business model to meet those demands. The food industry as a whole is the best example (but you could also substitute textiles, furniture, etc.). By and large, we buy cheap shit and for companies to continue to separate themselves from their competitors, they find ways to make it cheaper and cheaper. This has an effect on the labor market which screws your average dude looking for a job because the floor of labor prices is artificially lowered either buy illegals here or jobs that have been offshored. Great for Americans who shop at WalMart and see their costs drop. However the casualties are the folks that went from making meaningful money to making less than meaningful money and are all the sudden poor and have to rely on government assistance. Nowhere in this transaction is someone lazy. They just got squeezed out.
That's my take anyways. I'd love to figure out the best way to bring data into the argument to go along with my pretty narrative.