The Federalist Papers · Federalist No. 80 · paragraph 10

It may be esteemed the basis of the Union, that “the citizens of each State shall be entitled to all the privileges and immunities of citizens of the several States.” And if it be a just principle that every government OUGHT TO POSSESS THE MEANS OF EXECUTING ITS OWN PROVISIONS BY ITS OWN AUTHORITY, it will follow, that in order to the inviolable maintenance of that equality of privileges and immunities to which the citizens of the Union will be entitled, the national judiciary ought to preside in all cases in which one State or its citizens are opposed to another State or its citizens. To secure the full effect of so fundamental a provision against all evasion and subterfuge, it is necessary that its construction should be committed to that tribunal which, having no local attachments, will be likely to be impartial between the different States and their citizens, and which, owing its…

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