As confrontations with federal officers over their massive immigration enforcement operation in Minnesota showed no signs of stopping Wednesday, legal battles over the surge and the local response were also intensifying.
Federal prosecutors served grand jury subpoenas Tuesday to Minnesota Gov. Tim Walz's office and five other officials in the state as part of an investigation into whether they obstructed or impeded law enforcement during a sweeping immigration operation in the Minneapolis-St. Paul area, a person familiar with the matter said.
