In my vocabulary "free traders" includes them doin' the free tradin'; to wit, the U.S. corporations. My guess, if I were to write and ask, the answer would be, "XXX is an international corporation. It’s what we do." Fine.
Car companies are an extreme case. Since the days of "Engine Charlie" Wilson car companies have felt so secure as to be lulled into making outrageous deals with union bosses. The companies are just now dealing with the problems they themselves help create.
But still there are hundreds of other industries and the pertinent question remains: so how come insourcing can make an sell here and many of our guys say that it cannot be done competitively?
I suppose my question is more or less rhetorical.
I believe you mentioned various incentives; but, I understand those incentives are offered to get corporations to move into a location. Yes, that's an advantage that some foreigners enjoy -- but it's available to American companies also. Right now Michigan is running ads in California to attract companies to relocate.