Tiny Luxembourg has the highest per capita income of all 28 EU member states. Art Silverman/NPR hide caption
Luxembourg
Luxembourg City, the capital of Luxembourg — shown here in 2012 — mixes the medieval and the modern. The tiny European nation is making a serious bid for the futuristic, too. Loop Images/UIG via Getty Images hide caption
European Union Commissioner for Competition Margrethe Vestager says tax breaks give some companies an unfair advantage. Thierry Monasse/AP hide caption
Luxembourg's Prime Minister Xavier Bettel, right, puts his arm around his partner Gauthier Destenay as they leave the town hall after their marriage in Luxembourg on Friday. Charles Caratini/AP hide caption
A an employee works at Amazon's fulfillment center in Rugeley, central England, in 2012. President Obama wants Amazon and other U.S. companies to bring more of their overseas earnings home. Phil Noble/Reuters/Landov hide caption