International law — Relation to municipal law — Treaties — Consistency of statute with treaty — General Agreement on Tariffs and Trade — “Buy American”Act of state of United States of America — Supremacy of federal treaty and agreements — Interpretation of“national treatment”provisions — The law of the United States of America.

Treaties — Special kinds of — General Agreement on Tariffs and Trade — Interpretation of " national treatment" provisions — Consistency therewith of " Buy American " act of a state — The law of the United States of America.

Treaties — Operation of — Effect of municipal legislation — Provisions of General Agreement on Tariffs and Trade requiring national treatment for products of one Contracting Party in territory of another — Consistency therewith of “Buy American” Act of a state — Supremacy of federal treaty and agreements — Interpretation of “national treatment” provisions — The law of the United States of America.