Plus, they already speak the language so they have a much better chance of finding a good job in Mexico. By the way, if this young man does learn to speak English well, and gets on a good career path at Smart & Final, there is the possibility at some later date, he might end up transferring to an USA Smart & Final, completely legally. This is a smart practical young man, in any case.
The key word is LEGALLY. That’s all President Trump is asking for.