The Stars and Stripes Forever?

Global imbalances are once again a focus of discussion. This time, however, it is Germany, not China, which is identified as the major surplus country and an obstacle to economic recovery.  The German surplus, it is alleged, makes adjustment harder in the Eurozone’s periphery countries.

Much less attention has been paid to the other side of the imbalances: the deficits in the U.S. current account. The U.S. balance of payments position reflects the dollar’s role as a global reserve currency. Andreas Steiner has shown in “Current Account Balance and the Dollar Standard: Exploring the Linkages” (Journal of International Money and Finance, in press) that the demand for reserves lowers the U.S. current account by one to two percentage points of GDP.

The demand for those reserves is not likely to diminish any time soon. Rakesh Mohan, Michael Debabrata Patra and Muneesh Kapur, in an IMF working paper, “The International Monetary System: Where Are We and Where Do We Need to Go?”, analyze the increase in reserves by major emerging market countries who may turn to reserve accumulation to expand their central bank balance sheets. They project the demand for foreign exchange reserves for seven emerging markets ((Brazil, Hong King, China, India, Korea, Russia, Saudi Arabia) under different scenarios for the mix of domestic and foreign assets, and estimate that their holdings of net foreign assets will increase from $6 trillion in 2011 to between $7.8 trillion and $14.9 trillion by 2017.  They caution that other emerging markets, such as oil exporters, are not included in their projections, and the demand for foreign assets may be higher.

The use of the dollar as an international currency appears in private markets as well. Mohan, Patra and Kapur present data that show the dollar with a 44 percent share of the global foreign exchange market. The dollar’s predominance in the foreign exchange market is matched by its use in international banking and bond markets.

Joseph Gagnon in “Global Imbalances and Foreign Asset Expansion by Developing-Economy Central Banks” has argued that the demand for dollar-denominated assets by central banks drives the balance of payments surpluses in many emerging markets.  If the dollar retains its status as a reserve currency, then there will always be a demand for dollars that feeds into the balance of payments. Until there is a credible alternative (or alternatives), global imbalances that include U.S. deficits will be an inherent feature of the international monetary system.

What could threaten the dollar’s special status? Emmanuel Farhi, Pierre-Olivier Gourinchas and Hélène Rey argue in their Reforming the International Monetary System that the “backing” of the dollar, which took the form of gold under the Bretton Woods system, now exists in U.S. Treasury securities. If there is a change in perception about the reliability of this backing, then the transition to a multipolar reserve currency system may be more abrupt than desired.

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