美联储开始每月买400亿美债，不装了，不敢明说，直接原因是日本不买了！

Group 1 - The total amount of U.S. debt has increased significantly from under $5 trillion in 1995 to an expected $38 trillion by 2025, indicating a doubling trend approximately every 10 years, with the growth rate accelerating over time [1] - The U.S. government is facing issues with debt expectations, which are becoming publicly acknowledged, leading to the Federal Reserve's decision to end tightening and begin purchasing $40 billion in U.S. debt monthly [2][3] - Japan, previously a major buyer of U.S. debt alongside China, is no longer purchasing due to its own debt market problems, which puts pressure on other buyers and increases the risk of rising U.S. Treasury yields if the Federal Reserve does not intervene [2][3] Group 2 - The Federal Reserve's monthly purchase of $40 billion in U.S. debt translates to an annual total of $500 billion, a substantial amount aimed at lowering market interest rates [2][3] - There is a concern that if other potential buyers follow Japan's lead and stop purchasing U.S. debt, the Federal Reserve may need to increase its monthly purchases beyond the current $40 billion to stabilize the market [2][3]