Bessent's Yen Intervention Sparks Concerns Over Monetary Policy Blur

U.S. Treasury Secretary Scott Bessent's decision to support the yen has been met with surprise, but there is a case for cooperation between the U.S. and Japan. The yen's decline has contributed to growing concerns about inflation, which in turn has compounded the currency's depreciation.

The Treasury used euros from its Exchange Stabilization Fund to buy yen without affecting U.S. Treasury yields or pushing down the dollar. This maneuver was a novelty that initially arrested the yen's decline and even pushed it back up, generating a temporary profit.

However, Bessent acknowledges that currency intervention is only a temporary patch and can quickly get complicated and expensive when investors turn skeptical. He is preparing other tools for intervention, including expanding the Fed's Foreign and International Monetary Authorities Repo Facility to lend Japan more dollars to buy yen.

The move raises concerns about blurring the line between monetary and fiscal policy, particularly given the timing with new Fed Chairman Kevin Warsh taking office. The only sure way to relieve pressure on the yen is for Japan to address its inflation and government borrowing concerns by curbing fiscal loosening or raising short-term interest rates.