"State inspection laws, health laws, and laws for regulating the
internal commerce of a State, and those which respect turnpike roads,
ferries, &c. are not within the power granted to Congress. ...
Inspection laws, quarantine laws, health laws of every description,
as well as laws for regulating the internal commerce of a State, and
those which respect turnpike roads, ferries, &c., are component parts
of this mass. No direct general power over these objects is granted to
Congress, and, consequently, they remain subject to State legislation." | by: | |
Source: | Gibbons v. Ogden, 22 U.S. (9 Wheat.) 1 (1824) |
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