Kindness doesn’t cost a thing. Putting up a big “no foreigners welcome” sign, threatening to annex your neighbour, and throwing visitors to your country into detention for minor visa infractions, however? Such actions are expensive. The United States is on track to lose $12.5bn (£9.4bn) in international travel spending this year, according to a study published on Tuesday by the World Travel and Tourism Council. If the Trump administration is concerned that its aggressive rhetoric is costing tourist dollars, it’s not showing it. During a recent press conference about the 2026 Fifa World Cup, which will be jointly hosted by...