One of the most compelling progressive arguments for Brexit was pretty simple. It was that the European Union tended to favor European—i.e., white—immigrants over those from the Commonwealth nations, who were predominantly people of color. Under EU rules, migrants to Britain from countries like France, Italy, Spain, Germany, and Austria did not need a visa to work and live in Britain. But migrants from, say, India, Pakistan, Nigeria, or Jamaica were required to undergo extensive screening and difficult immigration procedures.
