International Law in Treaties of the United States
Written agreements record much that has been accomplished toward setting up a specific law between states. If international law is still essentially a customary law, with the weaknesses characterizing any such law, it is also true that through a process of transmutation many customary rules have at length been given more or less precise form through their inclusion in conventions. The opinion has been expressed that only by such a process will this law escape from being “a junk heap of antiquated and perverted forms of justice that has been brought about by the supremacy of power.” It is of course possible to have treaty provisions which merely incorporate by reference, and perhaps emphasize without stating, the rules generally accepted by civilized states.The reference may be to international law in terms, or to the established body of the law by plain implication. Even if an existing rule is referred to for the purpose of waiving rights under it as between the parties, there is ordinarily an implied recognition of what has become established through custom.