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Last Updated: Jun 01, 2026, 08:32 AM
The Constitution prohibits tariffs (fees or duties) on exports as well as prohibits states from establishing tariffs on imports from other states without the consent of Congress.
(Click on citations for more information)
Article 1, Section 9, Clause 5
Article 1, Section 10, Clause 2
No Tax or Duty shall be laid on Articles exported from any State.
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No State shall, without the Consent of the Congress, lay any Imposts or Duties on Imports or Exports, except what may be absolutely necessary for executing it's inspection Laws: and the net Produce of all Duties and Imposts, laid by any State on Imports or Exports, shall be for the Use of the Treasury of the United States; and all such Laws shall be subject to the Revision and Control of the Congress.