It seems like whatever definition of regulate is used must be applied to foreign nations and the Indians as well. So if regulate among the states meant free trade zones were to be established then wouldn’t that mean free trade zones are required with all nations? And since tariffs among foreign states are legal, I would assume that’s not the correct definition of regulate. I wish the authors had just said “states can’t put up tariffs between other states within the union…” Would’ve made it so much easier.
