In 1951, an epic struggle between a US president who stood on the verge of a nuclear war, and a central bank that was seeking to establish its right to set an independent monetary policy, resulted in an improbable victory for the central bank. President Harry Truman, at war in Korea, failed in a brutal attempt to force the Federal Reserve to maintain a 2.5 per cent limit on treasury yields, thus implicitly financing the war effort through monetisation. This victory over fiscal dominance is often seen as the moment when the modern, independent Fed came into existence.
The idea that the central bank should place a cap on the level of bond yields is firmly back on the agenda, at least in the eurozone. This week, Italian prime minister Mario Monti said that he was increasingly optimistic that his country’s bond yields might soon be capped. Although he stopped short of saying that this would be done by the European Central Bank, there really are no other viable candidates to achieve this. Furthermore, many economists are arguing that this is the right policy, since Italy is now following a sustainable budgetary policy which deserves to be rewarded by ECB action in the bond market.