I seriously wondered if he would have saved the half hour by answering the first question with "I have the right not to answer that question as I am a citizen r

I seriously wondered if he would have saved the half hour by answering the first question with "I have the right not to answer that question as I am a citizen re-entering my own country" instead of "None of your business" The former would still be asserting his right, but in a more polite way