Rep. Ilhan Omar is facing renewed scrutiny as federal investigators examine both her immigration history and her congressional financial disclosures, while a former immigration judge says any proven wrongdoing could potentially expose her to criminal charges or a separate denaturalization proceeding.

Nathan Hansen, an attorney who briefly served as an immigration judge earlier this year, told Fox News Digital that a criminal conviction would not automatically revoke Omar’s citizenship. Denaturalization would instead require a separate civil case brought by the Justice Department and would generally depend on whether the government could show that citizenship was illegally obtained or secured through concealment of a material fact or willful misrepresentation. Fox News

Federal agents searched Omar’s Washington residence on October 12 pursuant to a court-authorized warrant. Reuters reported that investigators are examining whether Omar or relatives supplied false information during the family’s immigration or naturalization process. The Justice Department has emphasized that the investigation remains active, and prosecutors have not decided whether charges will be brought or against whom. Omar denies wrongdoing and has described the investigation as politically motivated. Reuters

A separate federal inquiry is examining Omar’s financial disclosures after substantial differences appeared in reported valuations of businesses connected to her husband. U.S. Attorney Jeanine Pirro publicly confirmed that her office was reviewing those disclosures. It remains unclear whether that investigation is connected to the immigration inquiry. Fox News

Hansen also questioned claims that the age of the underlying allegations necessarily prevents prosecution, arguing that concealed fraud can affect limitation periods. That point requires some legal qualification: federal criminal immigration and naturalization offenses can carry specific statutes of limitations—for certain naturalization-related offenses, federal law provides a 10-year period—while civil denaturalization proceedings operate under different rules and generally are not governed by that same criminal deadline. Legal Information Institute

For now, the investigations remain unresolved. Omar has not been charged with a crime, and no court has found that she committed immigration or financial fraud. Any criminal prosecution or attempt to revoke her citizenship would require additional evidence and separate legal proceedings.