They may be desperate to hire anybody, but not everyone is willing, with good reason, to work 16 hour days with no overtime pay and sub-minimum wage no benefits and work for only part of the year and get paid under the table. only reason it make since for migrants is the low cost/standard of living back home and currency arbitrage where us dollar are worth so much more than their own currency.
Yep, there's plenty of awful jobs with no requirements but a pulse. The problem is that they'll grind your spirit and take all of your dignity and time, if not outright scam you themselves (see: MLM).
You can enter Mexico, and they have only checked I had paperwork/passport about one times of ten. No reason why you can't do the same thing if you want to do currency arbitrage. Paraguay will give you a residence permit pretty much just for showing up if you can get ahold of a USA passport, or you can avail yourself of the compact of free association and live in Micronesia without a visa. The arbitrage game is for everybody.
