On March 27, the European Union imposed its own safeguard tariffs on steel imports in reaction to those imposed earlier in the month by President George W. Bush. The EU duties range from 14.9 to 26 percent on 15 categories of imports compared with U.S. duties ranging from 15 to 30 percent. The EU can thus claim to have imposed lower tariffs while still achieving the same effect. Both EU and U.S. steel tariffs are designed to block import surges from troubled steel exporters in Asia, Latin America and Eastern Europe rather than from each other. The EU is planning...