National borders are a strong legal reason. It's silly to have to write that down. Absent a treaty between nations, national borders are the borders of laws! Th

National borders are a strong legal reason. It's silly to have to write that down. Absent a treaty between nations, national borders are the borders of laws! The US government is currently in a trade war with China. Is that illegal discrimination? Regulating internatiinal relations is a core government responsibility. No government would make it illegal for a company to choose not to do business in a non-ally foreign country. Millions of business already don't engage in many foreign countries, by default. Including yours, I bet. Why should they be required to do so?