My flag flies under no flag, especially the flag of the UN (which I would trample rather than fly).
The UN is a subversive organization on American soil AFAIC.
I read years ago that the flag of the UN is permitted to fly higher than the flag of the USA. I just read that the flag of the USA NEVER flies below that of the UN. I stand corrected on that.
Personaly, I would NEVER allow my flag to fly under ANY other flag. Far too much blood has been lost defending it.