Bernanke, you magnificent bastard, I read your book!
Like gold, U.S. dollars have value only to the extent that they are strictly limited in supply. But the U.S. government has a technology, called a printing press (or, today, its electronic equivalent), that allows it to produce as many U.S. dollars as it wishes at essentially no cost. By increasing the number of U.S. dollars in circulation, or even by credibly threatening to do so, the U.S. government can also reduce the value of a dollar in terms of goods and services, which is equivalent to raising the prices in dollars of those goods and services. We conclude that, under a paper-money system, a determined government can always generate higher spending and hence positive inflation.
As I have mentioned, some observers have concluded that when the central bank's policy rate falls to zero--its practical minimum--monetary policy loses its ability to further stimulate aggregate demand and the economy. At a broad conceptual level, and in my view in practice as well, this conclusion is clearly mistaken. Indeed, under a fiat (that is, paper) money system, a government (in practice, the central bank in cooperation with other agencies) should always be able to generate increased nominal spending and inflation, even when the short-term nominal interest rate is at zero.
First, as you know, Japan's economy faces some significant barriers to growth besides deflation, including massive financial problems in the banking and corporate sectors and a large overhang of government debt. Plausibly, private-sector financial problems have muted the effects of the monetary policies that have been tried in Japan, even as the heavy overhang of government debt has made Japanese policymakers more reluctant to use aggressive fiscal policies (for evidence see, for example, Posen, 1998). Fortunately, the U.S. economy does not share these problems, at least not to anything like the same degree, suggesting that anti-deflationary monetary and fiscal policies would be more potent here than they have been in Japan.
Second, and more important, I believe that, when all is said and done, the failure to end deflation in Japan does not necessarily reflect any technical infeasibility of achieving that goal. Rather, it is a byproduct of a longstanding political debate about how best to address Japan's overall economic problems. As the Japanese certainly realize, both restoring banks and corporations to solvency and implementing significant structural change are necessary for Japan's long-run economic health. But in the short run, comprehensive economic reform will likely impose large costs on many, for example, in the form of unemployment or bankruptcy. As a natural result, politicians, economists, businesspeople, and the general public in Japan have sharply disagreed about competing proposals for reform. In the resulting political deadlock, strong policy actions are discouraged, and cooperation among policymakers is difficult to achieve.In short, Japan's deflation problem is real and serious; but, in my view, political constraints, rather than a lack of policy instruments, explain why its deflation has persisted for as long as it has. Thus, I do not view the Japanese experience as evidence against the general conclusion that U.S. policymakers have the tools they need to prevent, and, if necessary, to cure a deflationary recession in the United States.
Welcome to the lower zero bound and policy driven markets. The rules of the game have changed and politicians/central bankers are in the cockpit. I think the Fed will do QE3 in June. Is that why risk assets are rallying? If we are indeed in a liquidity trap, and monetary policy is ineffective, then fiscal stimulus is the only answer. At this point, the marginal return of further QE cannot be high and Bernanke is (almost) out of bullets. Does anyone think we will get an optimal fiscal policy anytime soon in a political system of partisan brinkmanship? Interesting times.