The Federalist Papers · Federalist No. 81 · paragraph 12

But why, it is asked, might not the same purpose have been accomplished by the instrumentality of the State courts? This admits of different answers. Though the fitness and competency of those courts should be allowed in the utmost latitude, yet the substance of the power in question may still be regarded as a necessary part of the plan, if it were only to empower the national legislature to commit to them the cognizance of causes arising out of the national Constitution. To confer the power of determining such causes upon the existing courts of the several States, would perhaps be as much “to constitute tribunals,” as to create new courts with the like power. But ought not a more direct and explicit provision to have been made in favor of the State courts? There are, in my opinion, substantial reasons against such a provision: the most discerning cannot foresee how far the prevalency…

Publius · Alexander Hamilton, John Jay, James Madison · 1787–1788
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