Acting as the supreme global adjudicator, the WTO has ruled against laws deemed “barriers to free trade.” It has forced Japan to accept greater pesticide residues in imported food. It has kept Guatemala from outlawing deceptive advertising of baby food. It has eliminated the ban in various countries on asbestos, and on fuel-economy and emission stan­dards for motor vehicles. And it has ruled against marine-life protection laws and the ban on endangered-species products. The European Union’s prohibition on the importation of hormone-ridden U.S. beef had overwhelming popular support throughout Europe, but a three-member WTO panel decided the ban was an illegal restraint on trade.