When a man seeks to lead the largest city in America, his citizenship should be beyond question. Yet the candidacy of Zohran Mamdani, an avowed socialist Democrat and recently naturalized U.S. citizen, has raised a troubling question: Did he obtain his citizenship under false pretenses? That question became official on June 26, when Congressman Andy Ogles, Republican of Tennessee, formally asked the Department of Justice to investigate whether Mamdani’s 2018 naturalization should be revoked under 8 U.S.C. §1451(a) for “willful misrepresentation or concealment of material support for terrorism.” The request, addressed to Attorney General Pam Bondi, was not a partisan...