INTRODUCTION: After the end of World War II, the U.S. held $26 billion in gold reserves, of an estimated total of $40 billion (approx 65%).The design of the Bretton Woods System was that nations could only enforce gold convertibility on the anchor currency—the US dollar. Gold convertibility enforcement was not required, but instead, allowed. Nations could forgo converting dollars to gold, and instead hold dollars. Rather than full convertibility, it provided a fixed price for sales between central banks. However, there was still an open gold market. For the Bretton Woods system to remain workable, it would either have to alter the peg of the dollar to gold, or it would have to maintain the free market price for gold near the $35 per ounce official price. The greater the gap between free market gold prices and central bank gold prices, the greater the temptation to deal with internal economic issues by buying gold at the Bretton Woods price and selling it on the open market.
In 1960 Robert Triffin, Belgian American economist, noticed that holding dollars was more valuable than gold because constant U.S. balance of payments deficits helped to keep the system liquid and fuel economic growth. What would later come to be known as Triffin's Dilemma was predicted when Triffin noted that if the U.S. failed to keep running deficits the system would lose its liquidity, not be able to keep up with the world's economic growth, and, thus, bring the system to a halt. But incurring such payment deficits also meant that, over time, the deficits would erode confidence in the dollar as the reserve currency created instability.
In 1967, there was an attack on the pound and a run on gold in the sterling area, and on 18 November 1967, the British government was forced to devalue the pound. U.S. President Lyndon Baines Johnson was faced with a brutal choice, either institute protectionist measures, including travel taxes, export subsidies and slashing the budget—or accept the risk of a "run on gold" and the dollar. From Johnson's perspective: "The world supply of gold is insufficient to make the present system workable—particularly as the use of the dollar as a reserve currency is essential to create the required international liquidity to sustain world trade and growth."
By the early 1960s, the US dollar's fixed value against gold, under the Bretton Woods system of fixed exchange rates, was seen as overvalued. A sizable increase in domestic spending on President Lyndon Johnson's Great Society programs and a rise in military spending caused by the Vietnam War gradually worsened the overvaluation of the dollar.