Federal prosecutors opened a criminal investigation into Minnesota Governor Tim Walz in early 2026, focusing on alleged obstruction of federal immigration enforcement through sanctuary policies and on oversight of widespread fraud in state Medicaid, housing, and child-care programs that has led to charges against dozens of individuals. Grand jury subpoenas have sought records from the governor’s office, while congressional hearings have examined whether state officials had prior knowledge of the schemes or impeded probes. Walz has acknowledged the active DOJ inquiry but no indictment targeting him personally has been announced through mid-2026. The market centers on whether sufficient evidence emerges for formal charges before key resolution deadlines amid ongoing federal scrutiny of Minnesota’s programs.