According to foreign media reports, major U.S. stock indexes hit their biggest weekly decline since March 2020, after Trump announced a tariff plan that exceeded expectations, raising concerns about global economic growth. "The reason for the stock market crash today is that there is really a lack of buyers," said Carol Schleiff, chief market strategist at BMO Private Wealth. People have been watching how the initial (trade) negotiations/retaliation progressed, and don't know how to evaluate how much the decline is to be "sufficient". The Dow Jones Index is currently down 14.9% from its record closing, while the S&P 500 is down 17.4% from its record closing. The Nasdaq index fell 22.7% from the closing record set on December 16 last year, and has been confirmed to enter a bear market. The U.S. stock market today evaporated by more than US$3 trillion in market value. On Friday, Federal Reserve Chairman Powell did not give a short-term answer on how tariffs will affect monetary policy, saying: "We are facing a highly uncertain prospect, and the risks of unemployment and inflation are rising." In addition, other American stock markets have also been dragged down, with the Canadian Toronto stock index confirmed to enter a correction, closing down more than 10% from the all-time high set on January 30. Argentina's major stock indexes fell 7.4% at the initial closing. Mexico and Brazil's major stock indexes fell more than 5% and 3% respectively.