Cannot comment as to why the thread was pulled but according to the National Archives website, this is the “missing” XIII Amendment:
AMENDMENT XIII
Section 1.
Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
Section 2.
Congress shall have power to enforce this article by appropriate legislation.
Note: Passed by Congress January 31, 1865. Ratified December 6, 1865. A portion of Article IV, section 2, of the Constitution was superseded by the 13th amendment.
If any citizen of the United States shall accept, claim, receive or retain any title of nobility or honour, or shall, without the consent of Congress, accept and retain any present, pension, office or emolument of any kind whatever, from any emperor, king, prince or foreign power, such person shall cease to be a citizen of the United States, and shall be incapable of holding any office of trust or profit under them, or either of them.