Federal investigations into Minnesota Gov. Tim Walz center on two main fronts: a massive welfare fraud scandal involving fake Somali daycares and COVID-era feeding programs, potentially costing over $1 billion, and alleged obstruction of federal immigration enforcement following the killing of an ICE agent in January 2026. The DOJ launched a criminal probe into Walz and Minneapolis Mayor Jacob Frey for public statements purportedly impeding ICE operations, while House Oversight Committee hearings on March 4 revealed whistleblower claims of earlier knowledge and cover-up by Walz and AG Keith Ellison. No indictments or charges have resulted despite referrals to DOJ by Rep. Luna and congressional scrutiny under the Trump administration. Walz testified defending his administration and announced no re-election bid amid the fallout. Traders weigh political motivations against evidentiary hurdles in prosecutorial decisions, with upcoming DOJ developments as key catalysts.