Roughly speaking, that's the issue in the EC - Measures Affecting Poultry Meat WTO dispute (DS389), for which the U.S. recently announced it will request a panel. The panel request describes the issue as follows:
The EC prohibits the import of poultry treated with any substance other than water unless that substance has been approved by the EC. The EC has not approved any other substance. Consequently, the EC prohibits the import of poultry that has been processed with chemical treatments ("pathogen reduction treatments" or "PRTs") designed to reduce the amount of microbes on the meat, effectively prohibiting the shipment of virtually all US poultry to the EC. The EC has not published or otherwise made available the process for approving a substance. The EC also maintains a measure regarding the marketing standards for poultry meat, which defines "poultrymeat" as only "poultrymeat suitable for human consumption, which has not undergone any treatment other than cold treatment."
In 2002, the United States requested the European Commission ("Commission") to approve
the use of four PRTs in the production of poultry intended for export to the EC: acidified sodium chlorite, trisodium phosphate, peroxyacids, and chlorine dioxide. However, after more than six years, including unexplained delays, the EC has not approved any of these four PRTs and instead has rejected the approval of their use.
The EC's failure to approve is despite the fact that various EC agencies have issued scientific
reports regarding a number of different aspects related to the processing of poultry with these four PRTs. Those reports did not find any scientific basis for banning the use of these PRTs. To the contrary, the conclusion of these reports is that the importation and consumption of poultry processed with these four PRTs does not pose a risk to human health.
In a nutshell, the trade issue is the following: U.S. producers use chemicals to clean their poultry, but the EC does not allow the sale of poultry cleaned this way, so U.S. producers can't sell their poultry in the EC.
For SPS disputes, I'm always interested to see how the substance of the dispute is presented, in particular whether the claim is mainly about "discrimination," "necessity," or "science," or some combination of these three. Here, the parties seem to want to take different approaches to characterizing the dispute. From the USTR press release:
By contrast, from the DG Trade press release: "we will defend our food safety legislation, which does not discriminate against imported products." So, in the battle of the press releases, it's about science for the U.S., whereas for the EC it's about discrimination (or lack thereof).
Of course, it's the panel request that really matters in this regard. Here are some of the key provisions the U.S. cited in the request and what they are mainly about:
SPS Agreement Article 2.2 - Necessity and Science
SPS Agreement Articles 5.1 and 5.2 - Science
GATT Article III:4 - Non-Discrimination
GATT Article XI:1 - Quotas and other Import Restrictions. (This one could be interesting if it explores the intersection between import restrictions and domestic regulations, given that the measure bans all such poultry, not just imports)
TBT Agreement Article 2.1 - Non-Discrimination
It's interesting that the U.S. press release does not mention discrimination, but the panel request cites some discrimination provisions. I'm not sure what to make of that. I would have thought it would be a good idea to sell the case as being about discrimination, at least in part.
It's also worth noting that in the consultations request, the U.S. left out explicit references to the non-discrimination provisions. There, the U.S. cited SPS Agreement Articles 2.2, 5, 8 and Annex C(1); GATT Articles X:1 and XI:1; Agriculture Agreement Article 4.2; and TBT Agreement Article 2 (without mentioning which sub-provisions).
The substance of the discrimination claims will also be worth following. From what I can tell, this will be a claim of de facto discrimination, as the measures apply to all products regardless of origin. It is these kinds of claims that often give the most insights into the scope of the non-discrimination standard.