The one thing that could precipitate the demise of the dollar would be reckless economic mismanagement in the US. One popular scenario is chronic inflation. But this is implausible. Once the episode of zero interest rates ends, the US Federal Reserve will be anxious to reassert its commitment to price stability. There may be a temptation to inflate away debt held by foreigners, but the fact is that the majority of US debt is held by Americans, who would constitute a strong constituency opposing the policy.
The other scenario is that US budget deficits continue to run out of control. Predictions of outright default are far-fetched. But high debts will mean high taxes. The combination of loose fiscal policy and tight monetary policy will mean high interest rates, sluggish investment, and slow growth. Foreigners — and residents — might well grow disenchanted with the currency of an economy with these characteristics.
Mark Twain, the nineteenth-century American author and humorist, once responded to accounts of his ill health by writing that “reports of my death are greatly exaggerated.” He might have been speaking about the dollar. For the moment, the patient is stable, external symptoms notwithstanding. But there will be grounds for worry if he doesn’t commit to a healthier lifestyle.
Barry Eichengreen is Professor of Economics and Political Science at the University of California, Berkeley.
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