Page:Joseph Story, Commentaries on the Constitution of the United States (1st ed, 1833, vol II).djvu/481

 CH. XIV.] remote and considerable influence on commerce. The object of inspection laws is to improve the quality of articles produced by the labour of a country; to fit them for exportation, or for domestic use. These laws act upon the subject, before it becomes an article of commerce, foreign or domestic, and prepare it for the purpose. They form a portion of that immense mass of legislation, which embraces every thing in the territory of a state not surrendered to the general government. Inspection laws^ quarantine laws, and health laws, as well as laws for regulating the internal commerce of a state, and others, which respect roads, fences, &c. are component parts of state legislation, resulting from the residuary powers of state sovereignty. No direct power over these is given to congress, and consequently they remain subject to state legislation, though they may be controlled by congress, when they interfere with their acknowledged powers. Under the confederation, there was a provision, that "no state shall lay any imposts or duties, Which may interfere with any stipulations of treaties entered into by the United States," &c. &c. This prohibition was notoriously (as has been already stated) disregarded by the states; and in the exercise by the states of their general authority to lay imposts and duties, it is equally notorious, that the most mischievous restraints, preferences, and inequalities existed; so, that very serious irritations and feuds were constantly generated, which threatened the peace of the Union, and indeed must have inevitably led to a dissolution of it. The power to lay duties and imposts on 60