Diplomatic and consular privileges — Consuls — Immunities — Scope of immunity attaching to consul's acts — Vienna Convention on Consular Relations, 1963 — Interpretation — The law of the United States

Treaties — Conclusion and operation — Treaty signed but not yet ratified — Effect in municipal law — Vienna Convention on Consular Relations, 1963 — The law of the United states

Treaties — Interpretation — Principles and rules of interpretation — Purpose of treaty — Preparatory work — Vienna Convention on Consular Relations, 1963 — The law of the United States

Jurisdiction — In general — Territorial — Exemptions from and restrictions upon territorial jurisdiction — Foreign States — Contract between foreign State and United States citizen designed to embarrass government friendly to United States — Whether Spanish Government and its representative immune from suit for breach — Scope of immunity attaching to foreign sovereign's acts — The law of the United States