美国评级突遭下调！发生了什么？

Core Points - The European credit rating agency has downgraded the U.S. sovereign credit rating from "AA" to "AA-" due to deteriorating public finances and declining government governance standards [1] - The report predicts that without substantial reforms, U.S. government debt as a percentage of GDP could rise to 140% by 2030, significantly higher than most sovereign nations [1] - The agency noted that the concentration of executive power and the Trump administration's disregard for court orders have increased policy unpredictability and risk of policy errors [1] - The U.S. rating outlook is "stable," with balanced risks for upgrades and downgrades in the next 12 to 18 months [1] - As of October 21, the total U.S. federal government debt has surpassed $38 trillion, marking a significant increase in a short period [2] Financial Implications - The U.S. federal government debt reached $37 trillion in mid-August, indicating rapid growth in just over two months [2] - The ongoing government shutdown, which has lasted 24 days as of October 24, could potentially reduce economic growth by 0.1 to 0.2 percentage points for each week it continues [2] - Other rating agencies, including Fitch and Moody's, have also downgraded U.S. ratings, citing increased policy risks and long-term fiscal challenges [3] - Fitch has projected that the U.S. government deficit could remain above 7% of GDP, with debt-to-GDP ratio expected to reach 135% by 2029 [3] - Moody's downgraded the U.S. rating from AAA to AA1, reflecting a significant increase in government debt and interest payment ratios compared to similarly rated countries [3] Trade and Economic Impact - The new U.S. government's imposition of tariffs on trade partners has notably hampered the domestic economy [4]