WHAT MYSTERY?:

The great mystery of Trump's mindset is that he does not carry over the market-driven principles of his sensible domestic policies into the realm of international trade. The introduction of national borders does not mean that the gains from competition, certainty, and administrative simplicity no longer apply. The key principle of comparative advantage applies in both contexts. A good analogy is trade between states in the United States: Open trade among our states has produced growth and lowered costs for goods and services--and it could do the same at the level of nations.

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