Allowing trucks and trains to cross the EU’s internal borders without interruption not only facilitates trade; it also encourages the development of regional supply chains and production networks. Motor vehicle parts can be produced in one member state and assembled in another, after which the final product can be delivered to market.
废除申根协定将是一次巨大的经济退步。让卡车和火车在欧盟内部各国之间畅行无阻不但便利了贸易，也鼓励了地区供应链和生产网络的发展。汽车部件可以在一个成员国生产，在另一个成员国组装，然后将最终产品运往市场。眼下，欧洲正在竭尽全力提振生产率和竞争力，收紧边境控制将是对这些努力的沉重打击。