International law in general — Relation to municipal law — Treaties — Interpretation and application of treaties in municipal courts — Relation to statutes — The law of the United States

Treaties — Interpretation — Principles and rules of interpretation — General Agreement on Tariffs and Trade — Reprisals — Economic reprisals imposed in retaliation for imposition of import restrictions — Whether GATT permitting selective reprisals — The law of the United States

Treaties — Special kinds of treaties — General Agreement on Tariffs and Trade 1947 — Retaliatory suspensions of trade concessions — Whether these must be made on a most — favoured-nation basis — Interpretation and application of the Agreement in municipal courts — The law of the United States

Disputes — Unilateral means of redress short of war — Reprisals — General Agreement on Tariffs and Trade 1947 — Presidential proclamation withdrawing trade concessions on most — favoured-nation basis in retaliation for E.E.C. restrictions on certain United States exports — Whether authorized by domestic law — Whether selective measure striking at E.E.C. products only would have been consistent with GATT — The law of the United States