美国财政部发行在外的国债规模突破30万亿美元，较2018年翻倍

Core Insights - The U.S. Treasury's outstanding debt has surpassed $30 trillion for the first time, approximately double the amount from 2018 [1] - The total federal debt has risen to about $38.4 trillion, with around $30 trillion held by the market and the remainder held in government internal accounts, such as the Social Security Trust Fund [1] Debt Composition - The outstanding debt includes Treasury bills, notes, and long-term bonds, which are core components of the federal debt [1] - Market-held debt constitutes a significant portion of the total federal debt, indicating reliance on external investors [1]