Comity — Mutual judicial assistance — Respect for foreign laws — Request to foreign courts for examination of witnesses — Request for evidence regarding foreign legislation — Allegation that foreign legislation penal and discriminatory — Whether effect should be given to foreign legislation — Whether request for judicial assistance contrary to notions of comity

Relationship of international law and municipal law — Act of State and justiciability — Duty of courts of one State to give effect to laws of another — Exceptions to duty — The law of England