Aliens — Admission — Freedom of movement within territory of State — Alien liable to exclusion under United States law — Admission to United States subject to restrictions on movement within United States — Palestine Liberation Organization Permanent Observer at the United Nations

Recognition — Policy of recognition — Non-justiciability — United States policy of not recognizing the Palestine Liberation Organization

Relationship of international law and municipal law — Act of State and justiciability — United States political question doctrine — Recognition — Policy of recognition non-justiciable — Whether precluding court from hearing constitutional challenge to Executive’s refusal to allow spokesman of unrecognized entity to take part in public debate — Palestine Liberation Organization Permanent Observer at the United Nations — The law of the United States