The Oval Office symbolizes... the Constitution the hopes and dreams and I'm going to say democracy. And when you have a dress code in the Supreme Court and a dress code on the floor of the Senate floor of the House I think it's appropriate to have an expectation that there will be a dress code that respects the office of the President.
The clan is nothing more than a larger family with its patriarchal chief as the natural head and the union of several clans by intermarriage and voluntary connection constitutes the tribe.