The cotton subsidies have helped make the United States the world's top cotton exporter, with more than 40 percent of the world market.
They hope to win reductions in cotton subsidies by the wealthy nations, on the road to their eventual elimination.
Because the appeals process can drag on for months, maybe years, it is unlikely that Washington will cut cotton subsidies sharply anytime soon.
Cut your cotton subsidies to start with.
But the United States has made no public offer to reduce its cotton subsidies.
Bangladesh isn't clamoring for an end to cotton subsidies because higher prices would hurt its main export industry.
Brazil has mounted a strong legal challenge to America's cotton subsidies.
He singled out the dispute over cotton subsidies as a major disappointment.
Consumers lose, too: they have to pay for the cotton subsidy directly or indirectly and are also denied the lower rice price.
American and African officials said that another issue under detailed discussion involved limits on American cotton subsidies.