When Obama sued the state of Arizona, he violated the 11th amendment.
Also, in September 24th of 2009, Obama committed treason by heading the United Nations security Council. Barack Obama is the first President in history to hold two posts simultaneously. Article 1 section 9 of the constitution forbids and President from holding any nobility or title simultaneously.
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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."
LINK.
Don't try to have a play on words either, someone already tried to say that there were no Princes or Kings involved in this, as if the United Nations is void of such rule and authority at all. Prime Ministers, Kings, Generals, Presidents, and other titles all hold power or say so over the United Nations deals and talks. They may not always attend ( or ever attend), but rest assured, their part of it all is usually entwined somewhere, just not presiding over it.
When Obama took this position, good intentions or not, he actually committed treason as he held the position as ruler of the world AND President of the United States as he headed the United Nations council.
Watch "The Obama Deception" and Fall of the Republic" for the full scoop.