Federal agents seized Rep. Ilhan Omar's personal cellphone and issued grand jury subpoenas to more than a dozen of her relatives during a criminal immigration fraud investigation — executing the search at her Washington, D.C., home just 22 days before the November 3 midterms. The operation puts the Department of Justice in direct tension with its own longstanding pre-election guidelines and transforms what had been a yearslong background probe into an overt legal campaign against a sitting member of Congress in the final stretch of a midterm cycle that will determine House majority control.