When cheap international labor is the problem, retraining isn't the answer. Retrain to what?
And who does the "retraining?"
In any case, periodic retrainings because the uncertainties of the global economy leave American workers vulnerable to a paper shuffle between, say, Belgium and Hong Kong, are not suitable for all Americans. Folks raising families need a higher (though not absolute) level of security than that. Unexpected retraining that is necessitated by the economic caprices of elites not loyal to the United States is not a healthy trend for domestic tranquility among the American populace.
