Mexico has moved forward in the Tuna WTO proceedings, announcing its proposed amount of retaliation:
In accordance with Article 22.2, Mexico requests authorization from the DSB to suspend the application to the United States of tariff concessions and other related obligations in the goods sector under GATT 1994 in an amount of USD $ 472.3 million annually. Mexico has applied the principles and procedures of Article 22.3(a) of the DSU in considering what concessions and obligations to suspend. As required by Article 22.4 of the DSU, the level of suspension of concessions proposed by Mexico is equivalent on an annual basis to the level of the nullification or impairment of benefits accruing to Mexico under the covered agreements due to the United States' failure to bring its Tuna measure into compliance by 13 July 2013 or to otherwise comply with the recommendations and rulings of the DSB in United States – Measures Concerning the Importation, Marketing and Sale of Tuna and Tuna Products.
Presumably, after an arbitrator rules on this issue, the actual amount will be less than the $472.3 million requested. How high does the amount that is actually awarded need to be in order to induce the U.S. to take any additional compliance actions?