| http://www.w3.org/ns/prov#value | - But this is not all; for it is admitted, that when Congress and the States have power to legislate over the same subject, the power of Congress, when exercised, controls or extinguishes the State power; and, therefore, the consequence would seem to follow, from the argument, that all State legislation, over such subjects as have been mentioned, is, at all times, liable to the superior power of Con
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