World markets react to Trump’s latest tariffs with uncertainty mBlip / 3 hours ago February 23, 2026 From USA TODAY. President Trump imposed 15% blanket tariffs under a new law, the Trade Act of 1974. The world’s markets reacted to new uncertainty about tariff policy. Read more: https://www.usatoday.com/story/news/politics/2026/02/21/trump-tariffs-worldwide-supreme-court/88796259007/