Article 1, Section 10, Clause 2
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 Controul of the Congress.
| 1. | Articles of Confederation, art. 6, 1 Mar. 1781 |
| 2. | Tench Coxe to Virginia Commissioners, 13 Sept. 1786 |
| 3. | James Madison, Preface to Debates in the, 1787 |
| 4. | Records of the Federal Convention |
| 5. | Luther Martin, Genuine Information, 1788 |
| 6. | Alexander Hamilton, Federalist, no. 32, 199--203, 2 Jan. 1788 |
| 7. | Debate in Virginia Ratifying Convention, 15 June 1788 |
| 8. | Gibbons v. Ogden |
| 9. | Brown v. Maryland |
| 10. | James Madison to Professor Davis, 1832 |
| 11. | Joseph Story, Commentaries on the Constitution: 2:§§ 1013--15, 1029--30, 1049, 1833 |
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