In its present set-up, the EMU could be expected to follow its historical predecessor, the Latin Monetary Union, which was founded in 1865 and in effect ended in 1914. Then as now, it was impossible to coerce sovereign states to follow the rules needed to establish a single currency.

The coronavirus crisis has caused new distress in the European Economic and Monetary Union (EMU), as the southern part of the EMU has been hit stronger than the northern part. The common currency prevents nominal exchange rate adjustment in response to the asymmetric shock. Policymakers have...