In “An Economist Who Matters” (The Journal Interview, June 23), Kyle Wingfield describes Robert Mundell’s suggestion that the U.S. Federal Reserve and the European Central Bank put a floor and a ceiling on the euro and the dollar. Economists may look to nearly every continent for evidence that such a peg system spells short-term success, followed by long-term disaster. A dollar-euro peg would decrease U.S. and EU incentives to compete — to the detriment of the entire world.
Mr. Mundell also quotes Paul Volcker’s dangerously misleading statement that “the global economy needs a global currency.” In fact, we have a global economy in part precisely because we do not have a global currency. If currencies are not permitted to float according to market demand, some other variable in the trade equation will have to give. Frequently, that “give” falls to brutal labor policies (or lack thereof). For a functioning global economy to coexist with democracy, we should allow the market to dictate currency interaction.
The solution to an overvalued euro is not to create a ceiling. Strong-armed policies like the ones Mr. Mundell suggests have historically failed and carried other victims in their wake. Rather than larger bureaucracies fueled by sketchy policy, a more transparent strategy would allow the market to determine whether the euro is indeed overvalued, or if the currency has settled high for a reason.