Ed Koch, logically
From the NY Sun

Mr. Koch, who has called the United Nations a “cesspool” and a “monument to hypocrisy,” said his position on the world body’s internal operations did not affect his stance on its construction project. Punishing the United Nations “because you don’t agree with them, by preventing them from functioning and depriving them of new space, is ridiculous,” he said

I would rather have the UN move to Greenland. Plenty of clean air, and free parking, too.