Rwandans would like to wean themselves from American hand-me-downs, and the United States wants to punish them for it. Last week, the Trump administration suspended duty-free access to U.S. markets for Rwandan clothing. This may sound like inconsequential news, compared with the prospect of a trade war with China, the European Union or our Canadian neighbors, but the move follows a dangerous trend of disregard for Africa. And it’s not just Africans who will suffer: Neglecting the continent will foreclose trade opportunities, harm U.S. companies and, ultimately, cost U.S. jobs.