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The Role Of International Law As A Canon Of Domestic Statutory Construction, Ralph G. Steinhardt

Vanderbilt Law Review

From the beginning of our constitutional life, the Supreme Court has articulated principles that structure the juridical relationship between international law and domestic law. These principles purportedly offer rules of decision for resolving in domestic courts the potential in-consistencies between external and internal sources of law, and they do so with the surface simplicity of axioms. Treaties, for example, cannot trump constitutional norms.' Customary international law can provide a rule of decision at least in the absence of controlling legislative or executive acts. In the case of an irreconcilable conflict between a treaty and a statute, the latter-in-time prevails. When …