Trump administration announced new tariffs on more than 80 countries, ranging from 10% to 12.5%, effective Friday morning. The measures follow the expiration of a temporary levy and continue the president's effort to impose global duties without congressional approval, after a February Supreme Court ruling that found his prior use of executive power illegal. Countries affected include Canada, Mexico, China, the United Kingdom, Australia, India and members of the European Union. The administration set a 10% rate for nations that have adopted forced‑labor import prohibitions, such as Canada, the European Union, India, Mexico and the United Kingdom, and a 12.5% rate for those that have not, including Australia, Brazil, China and Japan. The tariffs are authorized under section 301 of the Trade Act of 1974, after the office of the United States Trade Representative conducted investigations finding evidence of unfair labor practices. The Supreme Court previously ruled the 1977 law the president invoked was not a valid basis for tariffs, stating that the power to regulate trade belongs to Congress. Analysts, including Alan Wolff of the Peterson Institute for International Economics, say the new tariffs represent further presidential overreach and are likely to be challenged in court. The New York Federal Reserve estimates that about 90% of the tariff burden will be passed on to U.S. consumers and businesses. A Harris Poll survey found 72% of Americans, including 64% of Republican voters, view tariffs negatively. Some small businesses consider tariffs a lower priority than other economic concerns such as rising costs and artificial intelligence. Since the February ruling, the government has reimbursed companies for tens of billions of dollars in tariff revenue. The tariffs are expected to face legal challenges, and their long‑term impact on trade and the economy remains uncertain.