That's an interesting thought. I have no recollection of detail now, I'd guess, since you say that - umm, because one parent was American i was an American citizen at birth is what you must mean - my choosing not to be American then must have included the renouncement you mention.
It was Plato who said, “He, O men, is the wisest, who like Socrates, knows that his wisdom is in truth worth nothing”