Zohran Mamdani, New York City’s mayor since January 2026 and a naturalized U.S. citizen since 2018, faces no active denaturalization proceedings despite earlier Republican calls for DOJ investigation into his application. Denaturalization requires a federal court to find clear, convincing evidence of willful material misrepresentation or fraud during naturalization, a threshold unmet by any public record or allegation tied to his political affiliations or background. The process remains rare and historically limited to cases involving terrorism, war crimes, or proven concealment rather than policy views. With the 2026 resolution window closing and no charges filed, traders assign near-certain probability to retention. Only an unprecedented acceleration of evidence and litigation could alter this outcome before year-end.