I would agree with peacefuljeffrey out of spite for the ineffectual UN, but as a matter of pragmatism I don't think that would be wise. Keeping it near the US, sure, but I'd rather not have an international terrorist target with my home country as a buffer zone.

However, if by some excellent twist of fate the country finally wakes up to the importance of an armed populace and kicks the UN out, the country may well become safe enough that, if the UN is still around, it might petition the US to allow it to return to the US. Oh the irony.