Brad Setser Analyzes US Intervention in Japanese Yen Market

Economist Brad Setser has provided an analysis of the United States' recent intervention in the Japanese yen market, characterizing it as unusual and exploring its potential implications. Setser, a senior fellow at the Council on Foreign Relations, noted that the intervention, which saw Japan sell dollars to buy yen, was notable for the US's apparent acquiescence, a departure from typical US policy that often prioritizes a strong dollar. This intervention occurred as the yen weakened significantly against the dollar, reaching multi-decade lows and prompting concerns about imported inflation in Japan and potential competitive devaluations by other nations. The Japanese Ministry of Finance confirmed on April 26 that it had intervened in the foreign exchange market to support the yen, marking the first such action since 2004. Setser suggests that the US's tacit approval might stem from a recognition of Japan's economic vulnerabilities and a desire to avoid further yen depreciation that could destabilize regional markets or pressure other countries to devalue their own currencies. He posits that the US may be willing to tolerate some yen appreciation if it helps stabilize the global currency landscape, particularly in the absence of significant US domestic inflation concerns that would necessitate a stronger dollar to curb import costs. The intervention followed a period of substantial yen weakness, with the yen falling over 10% against the dollar in the first quarter of 2024 alone. This depreciation was driven by a widening interest rate differential between Japan and the US, as the Federal Reserve maintained higher interest rates while the Bank of Japan began its normalization process with a modest rate hike in March. Setser also considers what might be next on the currency market's agenda, speculating whether other countries might follow Japan's lead if their currencies continue to weaken. He implies that the US might be signaling a shift in its approach to currency markets, potentially becoming more amenable to interventions aimed at preventing extreme volatility or disorderly depreciation, especially if such movements threaten broader financial stability or trade balances. The analysis underscores the complex interplay of monetary policy, currency valuations, and international economic cooperation, highlighting how the US's stance on currency intervention can have significant ripple effects across the global economy. Setser's commentary suggests a pragmatic, albeit unusual, approach by the US in managing currency dynamics, prioritizing stability over a consistently strong dollar in specific circumstances.