Summary

Nathan Clifford Transportation Company v. Wheeling…

Taxation, beyond all doubt, is the exercise of a sovereign power, and it must be admitted that all subjects over which the sovereign power of a State extends are objects of taxation; but it is equally clear that those objects over which it does not extend are exempt from State taxation,-from which it follows that the means and instruments of the general government are exempt from taxation.
Source: Wikisource

Nathan Clifford Transportation Company v. Wheeling…

Taxes levied by a State upon ships or vessels as instruments of commerce and navigation are within the clause of the Constitution which prohibits the States from levying any duty of tonnage without the consent of Congress; and it makes no difference whether the ships or vessels taxed belong to the citizens of the State which levies the tax or to the citizens of another State, as the prohibition is general, withdrawing altogether from the States the power to lay any duty of tonnage under any circumstances, without the consent of Congress.
Source: Wikisource

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