The U.S. seems to have embarked in a "transparency" crusade, fighting those WTO countries (and there are many!) that do not fulfil their notifications obligations.
So, at the rencently concluded "Trade Policy Review" of China, Michael Punke, U.S. Ambassador to the WTO, said the following when delivering his statement on the review:
In addition, China has failed to notify large fisheries subsidies, even though China is the world’s greatest fishing power and the Secretariat’s Report cites a study indicating that the Chinese Government’s support of this industry has exceeded $4 billion per year. The United States expects China, commensurate with its fishing status, to notify all of its fisheries subsidies promptly and to make a significant contribution in the WTO’s ongoing work toward ambitious and effective disciplines on fisheries subsidies.
Readers will find the full text of Ambassador's Punke here: