Was Regis Philbin a spy for the US?

No, Regis Philbin was not a spy for the US. He was a well-known television personality, actor, and singer, famous for hosting shows like "Who Wants to Be a Millionaire" and "Live! with Regis and Kathie Lee." There are no credible reports or evidence to suggest that he had any involvement in espionage or intelligence work. His career was primarily focused on entertainment and television.