The nagging fear that QE itself may be causing deflation

``Stephen Williamson, from the St Louis Fed, picked up the refrain last November in a paper entitled "Liquidity Premia and the Monetary Policy Trap", arguing that that the Fed's actions are pulling down the "liquidity premium" on government bonds (by buying so many). This in turn is pulling down inflation. The more the policy fails - he argues - the more the Fed doubles down, thinking it must do more. That too caused a storm.''