Much of what you say makes sense, except that comparative advantage exists quite apart from any attempt to regulate it. You can't simply regulate "fairness" in wages without implicitly penalizing the consumers of that labor.
If "fairness" needs to be regulated, then it is, by definition, unfair. So we make sure that shirts sell for no less that $200 each in the U.S. and penalize millions of consumers for the benefit of a small number of employees... some benefit.
Absolutely correct! But that's not going to stop the Third Way Democrats and other internationalists through their influence in everything that governs and regulates (UN, trade agreements, WTO, governments of countries, etc.) from trying.
I am not communicating fully. There is no intent to "benefit . . . a small number of employees" in the U.S. The intent is to benefit the overwhelming numbers of peoples in all the world -- IMO at the expense of employees in the U.S.
If you read their articles on ndol.org they agree that American job losses is a price that must be paid. On that they agree with conservative "free traders."
The difference is they see it as the road to world socialist government IMO ("social justice, etc."), the conservative "free traders" see it as business and immediate profits, what awaits them in the future?
Who are the ndol.org folks? They are movers and shakers in the Democrat Party. Not all Party leaders agree with them, of course. They are the Clinton wing (nuts). On these matters they have plenty of support from the conservative "free traders" clamoring for "cheap" labor -- that includes "guest workers" by the millions. Labor migration is part of the respective plans both have.