So its best for them to continue using what amounts to slave labor in poor conditions for sake of profit?
If Apple were willing to take their margins down to what other companies and even if it required an extra $50 or so be added to some products price tag, I doubt you'd find any US resident complaining. I know I'd gladly pay extra for a product made here rather than one made in, again, a situation that amounts to slave labor.
Isn't slave labor where the master has a right to kill you if you try to quit?