Trump Hikes Tariffs to 15% Following Court Ruling as U.S. Stocks Open Flat

U.S. President Donald Trump has announced an escalation in trade policy, raising global tariffs from 10% to 15%. This move follows a U.S. Supreme Court ruling that struck down Trump's previous “reciprocal” tariff framework, prompting a new approach. Major U.S. indices, including the S&P 500, Dow Jones, and Nasdaq, opened flat as investors weighed the potential impact on inflation and corporate earnings. Despite Trump’s statement that the duties take effect immediately, uncertainty persists regarding the actual timing due to a lack of formal documentation. Market participants are now focused on whether these measures will be officially codified soon, as global partners brace for the economic fallout. The resilience seen in Asia-Pacific markets earlier is now being tested by the cautious stance of Wall Street investors.