1: Border jumpers have kids here, kids are then legal. Ooohhhh, big hoops. (assumption, just like you made)
2: Or $$ to support his illegal family (again, assumption)
3: Because the US Gov't doesn't make mistakes
4: Flash enough money to someone, and they'll do a lot of things you wouldn't think they would do.
I love how it is not his fault he can't speak English. If I lived in Mexico (I'll pass, thanks), I'd sure as hell learn the language, and I'm terriable at learning foreign languages.