The Founders were believers in free trade. From the Federalist Papers:
Exorbitant duties on imported articles would serve to beget a general spirit of smuggling; which is always prejudicial to the fair trader, and eventually to the revenue itself: they tend to render other classes of the community tributary in an improper degree to the manufacturing classes, to whom they give a premature monopoly of the markets; they sometimes force
industry out of its more natural channels into others in which it flows with less advantage.
– Hamilton, Number 35