U.S. stock markets experienced mixed performance following the House of Representatives' approval of President Donald Trump's comprehensive tax and spending bill. On Thursday, stocks initially declined and U.S. long-term Treasury yields surged amid investor concerns over the growing national debt. However, by the end of the trading day, major indices showed little change, with the Nasdaq posting gains while the S&P 500 and Dow Jones Industrial Average fell marginally by less than 0.1%. Treasury yields remained elevated as investors continued to assess the potential economic consequences of the legislation. On Friday, stock index futures were subdued, reflecting ongoing risk aversion driven by worries about the country's fiscal outlook. The bill's passage in the House marks a critical step forward, but market participants remain cautious about its impact on deficits and borrowing costs.