Denaturalization Defense Allegations of illegal procurement of naturalization can result in the initiation of denaturalization proceedings in US federal court or an administrative hearing. Denaturalization, also known as Revocation of Naturalization, results in the nullification of the naturalization certificate and the loss of United States citizenship. Our firm is available to assist in the legal complexities that arise when citizenship has been challenged. We offer comprehensive representation in federal court as well as before administrative agencies. To schedule a consult with an immigration attorney, call 216-696-4676 or fill out our US immigration consultation request form.