I’ve always wondered and I’m sure you may have thought the same thing. What would happen if you did not answer the customs officers questions when coming back into the United Sates from another country. I actually asked numerous flight attendants and pilots and no one could give me an answer. I even went to a couple of managers and their only reply was “what a good question I don’t know.”
Well I came across Paul Lukacs blog “The Nomad Lawyer”, he wrote about this very topic. Everyone should read his story about his dealing with customs officials.