U.S. Joins Japan's Yen Intervention for First Time in Decades

The United States participated in Japan's currency-market intervention to support the yen in early August 2026, the first such U.S. involvement in decades, CNBC reported on August 3. The yen had gained roughly 3% against the dollar in August before the U.S. role was confirmed. Japan's intervention can force sales of U.S. government debt, potentially pushing Treasury yields higher.