Federal Reserve Bank of New York President John Williams said the rapid changes in immigration, trade and fiscal policy will change how the economy is still highly uncertain, the current monetary policy stance is still appropriate, so that the Federal Reserve can well respond to the changing environment. Williams said the decision to slow down the tapering of the Federal Reserve's action to shrink the portfolio is a natural part, the move has ‘no impact on monetary policy’. The move has ‘no impact’ on monetary policy.