American immigration law is supposed to keep illegal immigrants out of the workforce, where they offer cheap labor, such as domestics, baby nurses, short order cooks, day laborers, pool boys, etc. Due to the cheap labor our failure to enforce the law creates, Jews now generally don’t hire other Jews, since Jews generally are in this country legally. Why pay Tzippi a minimum wage to watch your kids, when you can pay Lupe $5 an hour? Why pay Moishe to make bourekas for minimum wage at a kosher pizza place when Juan will do the same for $4 an hour?
What Oomis described is beautiful. To have a rebbetzin of bubbe age look after your child, feed them kosher home cooking, give them a sense of varmkeit, teach them tefillos and zemiros, etc. is precious.