WTO finds for Vietnam in U.S. shrimp dumping case

GENEVA — World Trade Organization judges on Monday ruled that the United States is violating global trade rules in using its controversial "zeroing" method to impose anti-dumping tariffs on shrimp from Vietnam. The decision by a three-member panel was the latest of a series in which zeroing — a framework for calculating duties on goods sold at less than their price on the exporter's home market — has been found illegal under WTO agreements.