Minnesota Governor Tim Walz faces an active Department of Justice criminal investigation opened in January 2026 into whether he and other state officials obstructed federal immigration enforcement operations in the Minneapolis-St. Paul area, with grand jury subpoenas issued for records from his office and those of local leaders. Congressional oversight hearings in March 2026 examined his administration’s handling of multibillion-dollar fraud in state social service programs, including Medicaid and housing initiatives, though Walz has stated he was unaware of the scale and took steps to address it after learning details. No charges have been filed against Walz personally, and the probe centers on procedural and oversight questions rather than direct participation in fraud. Scheduled developments include potential further DOJ actions and any responses to ongoing congressional review through the remainder of 2026.