美股周五收盘点评：关税风险上升，三大股指大跌

Group 1 - President Trump signed an executive order imposing tariffs on imports from Canada, Brazil, India, and Taiwan just hours before the tariff deadline, despite ongoing negotiations for more favorable agreements [1] - Employment growth has sharply declined over the past three months, with an increase of only 73,000 jobs in July and a downward revision of nearly 260,000 jobs in the previous two months, resulting in an average increase of only 35,000 jobs over the last three months, the worst level since the pandemic began [1] - The report has raised expectations for a rate cut in September to 80.0% [1] Group 2 - President Trump stated that if Federal Reserve Chairman Jerome Powell continues to refuse to lower interest rates, the Federal Reserve Board should take control [1] - Bond prices have continued to rise as investors bet on a rate cut by the Federal Reserve, leading to an increase in gold prices [1]