Federal authorities issued more than a dozen grand jury subpoenas in inquiry into potential immigration fraud

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Federal authorities investigating the Minnesota representative Ilhan Omar seized the Democratic lawmaker’s phone and have issued more than a dozen grand jury subpoenas, including to some of her relatives, according to a person briefed on the inquiry.

The subpoenas were issued for a grand jury collecting evidence in Minnesota as federal authorities investigate potential fraud in Omar’s immigration paperwork, said the person, who spoke on the condition of anonymity because they were not authorized to discuss an ongoing investigation. The investigation led to federal agents searching Omar’s Washington DC home on Monday just weeks before the November midterms, in which Omar is seeking re-election.

The raid is meant to cast an air of suspicion and criminality over Democratic candidates who, like Omar, are facing the voters in a matter of weeks

On Monday, federal agents from the Department of Homeland Security raided the Washington DC area home of Ilhan Omar, a Minnesota congresswoman and a progressive Democrat, in the latest instance of Donald Trump’s effort to weaponize the national security state to harass, punish and embarrass his political opponents.

The raid, which was approved by a judge after a reportedly extensive back-and-forth with federal security officials, was nominally carried out in connection with a spurious criminal investigation into Omar’s childhood immigration to the US.

Moira Donegan is a Guardian US columnist