establishes particular guards against the repetition of those instances which have heretofore made their appearance, yet it is warrantable to apprehend, that the spirit which produced them will assume new shapes that could not be foreseen nor specifically provided against. Whatever practices may have a tendency to disturb the harmony between the States, are proper objects of Fœderal superintendence and control.
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 official existence to the Union, will never be likely to feel any bias inauspicious to the principles on which it is founded.
The fifth point will demand little animadversion. The most bigoted idolizers of State authority have not thus far shown a disposition to deny the National Judiciary the cognizance of maritime causes. These so generally depend on the Laws of Nations, and so commonly affect the rights of foreigners, that they fall within the considerations which are relative to the public peace. The most important part of them are, by the present Confederation, submitted to Fœderal jurisdiction.
The reasonableness of the agency of the National
