Local desires vs the WTO

The US governed WTO recently ruled that the EU cannot stop the import of GM (genetically modified) foods into their markets, despite a nearly unanimous desire on the part of their electorate to prohibit such imports. Perhaps this is a sign of global federalism in the making, where a country (in this case, a collective of countries) cannot decide their own trading policy. We can only hope that the local vendors are at least required to let its customers know (in bold print) that the food they are buying is GM.