The Bank of Israel moved from a single policymaker to a monetary policy committee in 2010, while I was governor there; more recently, central banks in India and New Zealand have handed over monetary policy to committees. The Federal Reserve is not part of this recent shift, however.
The Federal Open Market Committee (FOMC) has been responsible for monetary policy decisions in the United States since it was established by the Banking Act of 1935, two decades after the founding of the Fed itself.2 The movement toward committees reflects the advantages of committees in aggregating a wide range of information, perspectives, and models.