Is flying a foreign flag legal?

Related questions

1. Why is UK called Great Britain?
2. Why is UK and England flag different?
3. Can you fly a flag?
4. Can the British flag be upside down?
5. What does the flag look like in England?
6. What does an upside down flag represent?
7. What is the punishment for burning a flag?
8. Can you hang a flag vertically?
9. Can you legally burn the flag?
10. Why is Wales not on the Union Jack?

Tags

1. #including
2. #institutions
3. #requires
4. #schools
5. #foreign
6. #flown
7. #public
8. #require
9. #displaying
10. #forbid
11. #federal