L'argument moral contre une protection des travailleurs de la "concurrence" étrangère:

If government ever tried to enforce a rule that guaranteed that no rule-follower would ever lose his or her job, government would have to (try to) freeze in place the current pattern of economic activity. Consumers would be prevented from changing their patterns of spending; new technology would be outlawed; pursuit of greater efficiencies would be prohibited; demographic changes would be fiercely regulated by government. (...)
Appealing to rules is powerful. Everyone understands that breaking agreed-upon rules is wrong.
But there is no rule in a free society that says if you play by the rules – if you work hard, get an education, and are a person of integrity – that you’re guaranteed never to lose your job. Put differently, the fact that honest, decent, hard-working people sometimes lose their jobs is not evidence of unfairness, wrong-doing, mischief, or poor policy. (...)
To protect workers “who play by the rules” against job loss would require that government break nearly all of the rules of civil, free, and prosperous society.