A bit off topic, but I thought someone here may know best. Wife and I have a house up for rent. Several prospective tenants. None are coming back totally clean. Have a family very interested (Mexican decent), and ready to move immediately. Husband, wife, baby and brother of husband. They filled out our rental application/credit check form. The Good: Husband and brother have been working at same restaurant for 7+ years as cooks/chefs. Two newer nice cars. Rest. owner came with on second meeting and couldn't say enough good about the brothers. Very good workers, always prompt, clean, etc. The Bad: They don't use a bank, but most importantly, don't have Social Security numbers. Question: Are they considered illegal immigrants? Would they have drivers license/insurance? Would I be doing anything illegal by renting to them? I have a good feeling about them, but without a SS#, I am unable to perform a credit check. They are forced to leave current apartment due to new baby crying, noise, etc. This wouldn't be an issue in our rental. Any help guys?