It is the maxim of every prudent master of a family never to make at home what it will cost him more to make than to buy . If a foreign country can supply us with a commodity cheaper than we ourselves can make it, better buy it of them.
Adam Smith
The current bastardized form of "Free Trade" where factories are closed here and sent to a backward third country in secret trade deals, with the intended purpose of under cutting domestic labor is new modern phenomenon. It is an ugly thing that I think even Adam Smith would be appalled with. Marx would love it. As you do.