Yes he is. Though they work hard, if his employees are legal, he's a model employer. I just wish authors would make the distinction clear.
"I just wish authors would make the distinction clear."
Seems to me its safe to assume they are not. First of all why would they send money back if they intended to stay. Second, the article is showing how great of a people the mexicans are and the absence of an indication on their legal status tells us the author doesn't consider it important.