WASHINGTON — The U.S. Supreme Court did not issue a ruling on Wednesday on the legality of President Donald Trump's "reciprocal" tariffs on America's trading partners, including South Korea, despite expectations that the decision would come as early as this week. As the court announced a plan earlier to convene a public session, speculation arose that it could rule on the legality of Trump's use of the International Emergency Economic Powers Act (IEEPA) of 1977 to impose the country-specific tariffs. The court does not announce in advance which rulings it will issue. On its website, the court did not issue a ruling on the tariff case, though it announced its decisions in three other cases. Business leaders, policymakers and others had been closely waiting for the tariff ruling as it could have far-reaching ramifications for global trade. The Trump administration has imposed 15 percent reciprocal tariffs on Korean products, down from 25 percent, in accordance with a bilateral trade and investment deal under which Seoul has committed to investing US$350 billion in the United States, amon