<p>The president’s minions have trawled the statutes to restore roadblocks to trade. The invocation of Smoot-Hawley looks especially dangerous</p><p>Donald Trump may have found the killer weapon to punish countries at will: by imposing tariffs on their exports to the United States.</p><p>The president has been looking for a new tool since February, when the supreme court <a href="https://www.theguardian.com/us-news/2026/feb/20/supreme-court-tariffs-ruling-world-trade-trump">struck down tariffs