Summary

Nathan Clifford Waring v. The Mayor — Opinion of the Court

Sales by the importer are held to be exempt from State taxation because the importer purchases, by the payment of the duty, a right to dispose of the merchandise as well as to bring it into the country, and because the tax, if it were held to be valid, would intercept the import, as an import, in the way to become incorporated with the general mass of property, and would deny it the privilege of becoming so incorporated until it should have contributed to the revenue of the State.
Source: Wikisource

Nathan Clifford Waring v. The Mayor — Opinion of the Court

Congress has the power to regulate commerce with foreign nations, and among the several States, and with the Indian tribes, and the Constitution also provides that 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 its inspection laws, with a view to raise a revenue for State purposes.
Source: Wikisource

Nathan Clifford Waring v. The Mayor — Opinion of the Court

Authority to grant a permit does not exist until the duties are paid or secured to be paid, and the duties are never paid or secured to be paid before the goods are imported, nor before they are entered for consumption. Before the permit is received by the inspector on board the ship or vessel, no one has authority to remove the hatches or to break bulk, but the cargo is under the charge of the officer of the customs.
Source: Wikisource

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