As trade minister and subsequently, Wilson took a great deal of interest in Cuba which he visited on a number of occasions in an effort to improve political and trade links. He has written extensively in defence of Cuba and about his meetings with Fidel Castro. Writing in "The Guardian" about Castro's decision to step down as Cuban President, Wilson said he had "outwitted the United States and its 50-year obsession one last time" by ensuring an orderly transition in government while he was still alive. While trade minister, Wilson was also closely involved in defending the Scottish cashmere industry in the face of hostile trade measures by the United States, during the so-called "Banana Wars" (1999–2000).