This post was written by StatsGuy, a regular commenter here and very occasional guest contributor. We asked him to expand on the ideas he put forward in this comment on the relationships between monetary policy, international capital flows, and bank capital requirements.
Former Fed Chairman William McChesney Martin is most famous for his notorious quip that the job of the Fed is to “take away the punchbowl just as the party gets going.” It seems this has evolved into a full fledged theory of monetary management.
Unfortunately, structural problems – like trade imbalances, inadequate capital ratios, and weak financial regulation – severely constrain Fed monetary policy options by impacting currency flows and the value of the dollar. (Some specific mechanisms are listed in the previous comment.)
Why does this matter? Because it means the Fed cannot use monetary policy as effectively to keep the country going at full throttle and avoid a prolonged fall in utilization rates (unemployment and idle machines). How can it be that capacity utilization is still lower than at the bottom of the 81/82 recession and we’re ALREADY raising the bubble/inflation alarm? (Paul Krugman discusses this here, and the answer is that the output gap is itself defined against neutral inflation, not just capacity utilization.)