When you say, "less than 'livable' wages," what you're really saying is "less than I'm willing to live on." If others are "living" on them, they are livable for them.
When you talk about "dollars leaving the country," respectfully, you're not making economic sense. Our dollars leave the country every time we purchase anything from anyone not in the U.S., whether that's a Glock, or a CZ, or coffee, or oil, or Swiss chocolate, or Italian wine, and yes, even labor. With labor, a lot of that money stays here, but again, that's all irrelevant. We purchase from other countries because we get a better deal, or we get something we don't or can't produce here. In Mexico, they produce people whose "livable wage" is less than people here need. These transactions make us all wealthier in the big picture and the long run.
