In Britain, supermarket shelves are emptying out and long queues are forming at gas stations? Why? Brexit. Britain has always had a shortage of truck drivers but, after it exited the European Union, the scarcity has worsened. Many Eastern Europeans who were employed as drivers lost their right to live and work in the UK, and British firms lost reliable labour. Flow of goods has turned sluggish, and there is nothing to be stacked on those shelves. The government is tackling the crisis--by trying to interest Britons in truck driving as a career and by loosening immigration rules to make recruitment of drivers from Europe easier. Humble pie, anyone?