The United States called on China to reopen its market to U.S. chicken broiler parts following the formal adoption by the World Trade Organization (WTO) of a ruling in the four-year-old dispute. U.S. chicken exports to China have fallen 90% over the past four years, costing sellers an estimated USD1 billion, after China imposed high anti-dumping duties. U.S. Trade Representative Michael Froman said that in the wake of the ruling, China should revise its trade rules. China welcomed part of the ruling. The WTO panel report supported China’s reasons regarding how domestic industry and trade level differences are determined. China imposed anti-dumping duties on chicken products from the U.S. in September 2010, claiming they were subsidized and then dumped in the Chinese market at a price less than fair value.