They're fuckin' like bunnies, eh?

Maybe you haven't noticed but when people get better off, and particularly with the more education they get, the fewer kids they have. My boss at my previous job was a 2nd generation Mexican-American. His parents spoke Spanish at home, but he doesn't speak a word of it, and has only 2 kids and only plans to have 2 kids. Your racist idea that Mexicans are more fecund than northern Europeans (or whatever you think "we" are) is stupid. Or maybe you think it's because they're Catholic. Here's a clue: even if Mexico reaches "saturation" (whatever that is), they'll still be Catholic. If they move here and rub elbows with the Protestants, Jews, Atheists, and the occasional Baha'i, they're far less likely to remain Catholic.

Yep, no doubt about it. The way to keep a Mexican family from multiplying like bunnies is to move them to America.