U.S. federal prosecutors have initiated a criminal investigation targeting Federal Reserve Chair Jerome Powell and the central bank's controversial $2.5 billion headquarters renovation project. The probe raises questions about fiscal responsibility and oversight at the highest levels of American monetary policy. This development comes amid growing scrutiny of Fed operations and spending decisions. Market participants are closely monitoring how the investigation unfolds, given the Fed's critical role in setting interest rates and managing inflation. The inquiry could potentially influence policy decisions and regulatory approaches toward financial institutions in the coming months.