As all appeals regarding the WTO ruling against its country-of-origin labeling (COOL) law  have been exhausted, the  U.S. filed a brief disputing the level of the retaliatory tariffs claimed by Canada and Mexico with a request that a WTO arbitrator reject the proposed amounts. COOL Retaliation Delayed by Appeal The U.S. has appealed the retaliatory tariffs proposed by Canada and Mexico under the WTO's decision against its country-of-origin-labeling (COOL) law. The WTO Appellate Body ruled in May that the mandatory law and regulations violate U.S. international trade obligations and illegally discriminate against imported livestock from both countries. While Canada is seeking $2.41 billion and Mexico is claiming $713 million in s...