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 have cognizance of all causes in which the citizens of other countries are concerned. This is not less essential to the preservation of the public faith, than to the security of the public tranquillity. A distinction may perhaps be imagined, between cases arising upon treaties and the laws of nations, and those which may stand merely on the footing of the municipal law. The former kind may be supposed proper for the federal jurisdiction; the latter for that of the states. But it is at least problematical, whether an unjust sentence against a foreigner, where the subject of controversy was wholly relative to the lex loci, would not, if unredressed, be an aggression upon his sovereign, as well as one which violated the stipulations of a treaty, or the general law of nations. And a still greater objection to the distinction would result from the immense difficulty, if not impossibility, of a practical discrimination between the cases of one complexion and those of the other. So great a proportion of the controversies in which foreigners are parties, involve national questions, that it is by far most safe, and most expedient, to refer all those in which they are concerned to the national tribunals.

The power of determining causes between two states, between one state and the citizens of another, and between the citizens of different states, is perhaps not less essential to the peace of the union, than that which has been just examined. History gives us a horrid picture of the dissentions and private wars which distracted and desolated Germany, prior to the institution of the by Maximilian, towards the close of the fifteenth century; and informs us, at the same time, of the vast influence of that institution, in appeasing the disorders, and establishing the tranquillity of the empire. This was a court invested with authority to decide finally all differences among the members of the Germanic body.

A method of terminating territorial disputes between the states, under the authority of the federal head, was not unattended to, even in the imperfect system by which they have been hitherto held together. But there