The US interest rates were also affected by France's decision to raise their interest rates to attract gold to their vaults. In theory, the U.S. would have two potential responses to that: Allow the exchange rate to adjust, or increase their own interest rates to maintain the gold standard. At the time, the U.S. was pegged to the gold standard. Therefore Americans converted their dollars into francs to buy more French assets, the demand for the U.S. dollar fell, and the exchange rate increased. The only thing the US could do to get back into equilibrium was increase their interest rates