The Constitutional Line on Direct Taxes

Although some judges and other writers have been confused about direct and indirect taxes, when the Constitution was adopted the definitions were, as John Marshall said, “clearly understood.”

What Is Tonnage?

Article I, Section 10, Clause 3 (I-10-3) of the Constitution forbids states from imposing any “Duty of Tonnage” without the consent of Congress. During the Founding Era, tonnage was a levy imposed on the cargo capacity of ships entering or leaving harbors. As the Constitution’s words indicate, it was a species in a larger class […]