Some unprecedented news today, folks. Never in the history of the United Nations has a U.S. President taken the chairmanship of the powerful UN Security Council. Perhaps it is because of what could arguably be a Constitutional prohibition against doing so. To wit: Section 9 of the Constitution says:

No Title of Nobility shall be granted by the United States: And no Person holding any Office of Profit or Trust under them, shall, without the Consent of the Congress, accept of any present, Emolument, Office, or Title, of any kind whatever, from any King, Prince, or foreign State.......