Jurisdiction — Executive — United States agents conducting search of Mexican national’s property in Mexico — Consent of Mexican authorities — Evidence obtained during search used in prosecution of Mexican national in United States — Whether Fourth Amendment to the United States Constitution applicable to search of alien’s property in foreign State — Whether requirement to obtain warrant authorizing search practicable

Relationship of international law and municipal law — In general — International law restrictions upon the exercise of power by one State in the territory of another — Relationship to constitutional provisions in first State — The law of the United States