美国评级，突遭下调！发生了什么？

Core Viewpoint - The report from the European credit rating agency has downgraded the U.S. sovereign credit rating from "AA" to "AA-" due to the deteriorating public financial condition and declining governance standards in the U.S. [2] Financial Condition - The U.S. public finances are worsening, characterized by persistently high fiscal deficits, rising interest expenditures, and limited budget flexibility, leading to an increasing government debt level [2] - The report predicts that without substantial reforms, the U.S. government debt-to-GDP ratio could rise to 140% by 2030, significantly higher than most sovereign nations [2] Governance Standards - The decline in governance standards is a significant reason for the rating downgrade, with concerns over the concentration of executive power and the Trump administration's disregard for court orders and congressional oversight, which increases policy unpredictability and risks of policy errors [2] - The uncertainty displayed in tariff negotiations with major trading partners exemplifies this governance issue [2] Rating Outlook - The agency has assigned a "stable" outlook for the U.S. rating, indicating that the risks of both upgrades and downgrades are balanced over the next 12 to 18 months [2] - Downside risks include the continuous rise in debt levels and a potential significant weakening of the U.S. dollar's status as a global reserve currency, which could reduce global demand for U.S. Treasury securities [2] Recent Developments - As of October 21, the total U.S. federal government debt has surpassed $38 trillion, marking a significant increase from $37 trillion just two months prior [3] - The ongoing government shutdown, which has lasted for 24 days as of October 24, could potentially reduce economic growth by 0.1 to 0.2 percentage points for each week it continues [3] Other Rating Agency Actions - Other rating agencies have also downgraded U.S. ratings this year, citing policy risks and long-term fiscal challenges [4] - Fitch Ratings downgraded the outlook for 25% of U.S. industries to "negative" due to increased uncertainty, slowing economic growth, and expectations of prolonged high interest rates [5] - Moody's downgraded the U.S. sovereign credit rating from AAA to AA1, reflecting a significant increase in government debt and interest payment ratios compared to similarly rated countries [5]