While the Department of Homeland Security referred all questions to the Justice Department, a Justice Department spokesman declined to comment on details of the ongoing investigation. The spokesman did, however, issue an official statement declaring that American citizenship "must be obtained lawfully and honestly," adding that the administration will investigate any case where the facts support denaturalization.
Former immigration officials have noted publicly that denaturalization investigations are historically rare and almost never involve search warrants, since the government typically already holds all relevant immigration records. Carrie Doyle, former deputy general counsel at the Department of Homeland Security, explained: "Most of the denaturalization cases we dealt with involved very serious violations of international human rights, or very serious crimes, such as Nazi war criminals."
The timing and nature of the investigation have drawn sharp criticism, as the Justice Department has traditionally avoided overt investigative actions against political figures within sixty days of an election. President Donald Trump has frequently attacked Omar's origins and her Muslim faith. When asked by the New York Times in January whether he thought she should lose her citizenship, Trump replied: "Oh, definitely."
Homeland Security Secretary Marquayne Mullin also recently hinted at the possibility of deportation, telling a podcaster there may have been "some illegal activity to get them into the United States in the first place." While a coalition of news organizations is working to unseal the search records, the unprecedented case continues to raise significant legal and constitutional questions about the political use of the justice system and the protections afforded to sitting members of Congress.