道指跌0.4%，美国总统特朗普在签署稳定币立法草案为法律的仪式上宣称，“我们将宣布几份大型贸易信函”。

Core Insights - The Dow Jones Industrial Average fell by 0.4% amid ongoing market fluctuations [1] - President Trump signed a stablecoin legislation draft into law, indicating potential regulatory developments in the cryptocurrency sector [1] - Trump announced that "we will announce several large trade letters," suggesting upcoming trade-related news that could impact various industries [1] Market Impact - The decline in the Dow Jones reflects investor sentiment and market reactions to political and economic announcements [1] - The signing of stablecoin legislation may lead to increased regulatory clarity in the cryptocurrency market, potentially affecting investment strategies and market dynamics [1] - Anticipation of large trade letters could influence market expectations and trading behaviors across sectors [1]