Jurisdiction — Exemptions from — Foreign States — Waiver of sovereign immunity — Ineffective to give United States court power to review act of foreign sovereign within territory of foreign sovereign — The law of the United States of America.

States as international persons — Recognition of acts of foreign States and Governments — Where expropriatory act of foreign Government against its own national alleged to be without compensation and without due process of law — Counterclaim by alien in action brought by own Government — The law of the United States of America.