Jurisdiction — Territorial — At the Maritime Frontier — Protective Jurisdiction on High Seas — Enforcement of Territorial Immigration Laws — Freedom of High Seas — Limitations — Right of Visit, Search and Arrest in Time of Peace — Exercise of Jurisdiction after Invalid Seizure — Validity — Criminal Jurisdiction over Foreigners — Forfeiture of Property of Nonresident Alien — Legality — Mandates — Mandate for Palestine — Obligations of Mandatory — Encouragement of Jewish Immigration — Validity of Legislation Allegedly Repugnant to Mandate — International Law — Nature and Binding Force — Relation to Municipal Law — Construction of Statutes in Conformity with Rules of International Law — Derogations from Rules of International Law in Favour of Mandatory — Exercise of Mandate — Subordinate Legislative Organs — Power to Enact Extraterritorial Legislation — Palestine — Forfeiture of Vessel Bearing Illegal Immigrants — Immigration Ordinance, 1941–1945