The Justice Department has maintained active investigations into Minnesota Gov. Tim Walz regarding potential conspiracy to impede federal immigration enforcement and separate allegations of failing to halt large-scale fraud in state-administered federal programs. Probes launched in early 2026 examined public statements by Walz and local officials during ICE operations in the Twin Cities, leading to grand jury subpoenas later deemed unconstitutional by a federal judge in June. A June referral from Vice President JD Vance, citing a House Oversight Committee report, urged scrutiny of whether Walz and Attorney General Keith Ellison ignored warnings of hundreds of millions to billions in welfare and Medicaid fraud. No charges have resulted as of October 2026, though traders monitor further referrals, court rulings on investigative tools, and any shifts in enforcement priorities that could alter charging decisions.