Only twice has a country filed a challenge in the WTO against another’s required notification of its domestic ag subsidies. The first was in May when the U.S. did so against India’s report on market support for wheat and rice during MY 2010/11-2013/14. The second time was yesterday when it filed another counternotification against India’s report of its cotton subsidies for MY 2015/16 (that for MY 2016/17 has not yet been submitted). India’s market price support (MPS) program payments operate as government purchases of the supported commodities at a guaranteed reference price. The limit of such payments under the WTO is 10 percent of the total market value of production (VoP), but the U.S. counter notice claims that...