The treaty-making power is granted in the Constitution without any express limitations as to the subjects to which it may relate. And all treaties, without qualification, are declared to be the supreme law of the land, "anything in the Constitution or laws of any State to the contrary notwithstanding." If, then, there are any limitations to its extent, they must be found inherent in the nature of the treaties themselves, or implied in other clauses of the Constitution or in the very nature of the polity which that instrument is designed to create and maintain.