The sanctions battle between Moscow and Washington continues apace, and it seems only a matter of time before Russia starts arbitrary restrictions on imports of American agricultural products. Sugar Pot Calls Sugar Kettle Black U.S. sugar producers filed petitions to have antidumping and countervailing duties imposed on sugar from Mexico. They fault subsidies for causing Mexico to dump sugar on the U.S. market, as opposed to the subsidies that the U.S. industry receives. Quotas short the market and thus provide U.S. producers with artificially higher prices, and the government spent nearly $300 million last year helping growers avoid forfeitures. By contrast, the Mexican government has been trying to reduce its role in sugar production. M...