State territory — Rivers — Multi — national rivers — Pollution by upper riparian State — Treaty for prevention of harmful pollutionStatute authorising increase in pollution — Force of, in municipal law — The law of the United States of America.

Treaties — Operation of — Force off in municipal law — Effect of subsequent inconsistent statute — Treaty for prevention of pollution of international and multi-national waters — Statute of upper riparian State authorizing increase in pollution — Validity of — The law of the United States of America.