Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway.
Article I of the Constitution states that:
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.
Two questions. First, does a dual citizenship from a foreign state meet this definition? Words like "any kind" make this definition seem rather broad. Second, does this clause prevent someone from holding public office, or does it merely present the means by which someone holding public office can be punished?
By guess is no to the first, and the latter for the second... but I'm not an expert. Anyone else have opinions? Does anyone know of case law that clarifies either point?