Okay, Free Exchange poses the following query:
However, given the extremely high marginal value of money for low-skilled workers in less developed country, and the relatively high standard of living of even very poor people in highly developed countries, might not the redistribution of opportunities for lower-skilled workers create larger overall welfare gains than the redistribution of higher-skilled opportunities? If so, then why should we worry especially about lower-skilled outsourcing? It seems that we shouldn't—unless it is permissible to favor the welfare of our domestic low-skilled laborers over the welfare of even less-privileged foreign workers.
Yes, it is entirely permissible for a national government to sacrifice worldwide welfare gains in order to favour their own citizens. In fact, if they weren't doing that, I would be irritated and vote for someone else. People who are not citizens have extremely limited or no standing in terms of CBA, and I agree with that.