Group 1 - The U.S. Treasury Secretary, Janet Yellen, reassured that U.S. government bonds will "never default," despite warnings from industry leaders about a potential collapse in the bond market [1][3] - The U.S. is facing significant pressure regarding its debt situation, with concerns raised about the government's increasing debt and its impact on the bond market [5][8] - China, as the second-largest holder of U.S. debt, has significantly reduced its holdings, selling $18.9 billion in March alone, and its total holdings have decreased by 42% from peak levels [3][5] Group 2 - The bond market is experiencing unprecedented sell-offs, with U.S. bond yields rising nearly 20 basis points, marking the largest volatility in 20 years [3][5] - There are growing concerns among U.S. lawmakers and business leaders that the increasing government debt could lead to the bond market exerting control over national policies [5][8] - The U.S. government is under pressure to negotiate with China to encourage more purchases of U.S. debt, but China's recent actions indicate a clear stance against this [8]