The Eurocrat Who Makes Corporate America Tremble

The Black Diamond library sits at a slight forward slant on Copenhagen’s riverfront, resembling a pair of Borg spaceships peering into the water. On the morning of a European Commission citizens’ dialogue in early February, the building’s coal-dark facades were slicked with rain and mist, but more than 100 people had trooped into its auditorium. The event was an episode in a traveling roadshow in which the 28 European Union commissioners—one per member state, each with a portfolio such as trade or transport—take turns fielding questions and explaining their policies. This was the 131st such dialogue since late 2014, and ...