A World Trade Organization ruling approved a long-outlawed U.S. trade policy on Tuesday, when a panel of adjudicators said Washington's use of "zeroing" to calculate anti-dumping tariffs was permissible in the case of Canadian softwood lumber.
The WTO's long-running row over zeroing is a technical dispute that turned into a power struggle between the United States and the arbiters of international trade law.
Source: CBC News
