Expropriation — Debt — Situs of debt — Bank loans made by Cuban branch of United States bank to United States corporations in Cuba — Loans to be repaid in Cuba — Whether situs of debt in Cuba

Relationship of international law and municipal law — Act of State and justiciability — Principle that United States courts will not question validity of expropriation by foreign State within that State’s territory — Situs of property — Bank loans — The law of the United States