Zohran Mamdani, the sitting New York City mayor elected in 2025 and inaugurated in January 2026, became a naturalized U.S. citizen in 2018 after arriving from Uganda as a child. Republican lawmakers, including Rep. Andy Ogles, called in mid-2025 for DOJ investigation and potential denaturalization over alleged nondisclosure of political associations or statements, prompting brief comments from President Trump. Immigration law experts have assessed these claims as lacking verifiable evidence of willful misrepresentation on the naturalization application, with denaturalization proceedings requiring a high legal threshold and facing substantial procedural and judicial barriers. No active federal action or new supporting documentation has surfaced in 2026, supporting the market’s strong consensus against revocation by the end of 2026. Even under an administration prioritizing such cases, successful outcomes remain rare absent clear fraud, and any process would likely encounter extended court challenges. Late-breaking verified evidence of material concealment could theoretically shift probabilities, though none has emerged.