However, this is not the way that the European Union wants to see many competing products presented. So in its 2013 trade agreement with Canada the EU got Canada to agree that only feta made in Greece could be called “feta.” If that rule weren’t quirky enough, the agreement that involves so-called “geographical indications” or GIs also allowed non-Greek companies to call their cheese feta only if they had been producing and marketing their cheese as feta before October 18, 2013.

This arrangement poses a problem for the U.S. dairy industry. While the provision was made to protect those already in this business, new producers trying to sell their feta would be barred from entering the Canadian market unless they called their product “feta-like” or a similar term. This locking-in of existing names would extend to nearly a few hundred agricultural products that could only originate in 28 member states of the European Union.

The United States was not party to the negotiations, but the agreement between Canada and the EU ripples across global markets and economies without their say. It also highlights a major difference between agreements that are near-global, under the auspices of the World Trade Organization (WTO), and regional arrangements. The sub-global agreements affect the trade of nonparticipants without their being consulted or consenting. Not every geographical indication (GI), which is what these designations are called, is one that either an average American consumer or our country’s negotiators would agree was appropriate. (In fact, the EU member states themselves had a row with Greece over its exclusive use of the name “feta” that took years of litigation to settle).

So it’s no surprise that as world leaders negotiate a Pacific Rim trade deal involving nearly 40% of the world’s economy, officials are hoping to limit GIs. In the Trans Pacific Partnership (TPP) talks, the tack being taken is damage limitation. Under the Trans-Pacific Partnership (TPP) agreement, officials are reportedly proposing to create a domestic process so that those who oppose having more GIs be given an opportunity to show that a term is really generic.

There is another origin problem — this one inherent in all regional trade arrangements. The participants to any bilateral or otherwise less than global deal will want, to the extent that they can, to limit the benefits to themselves, and not to free-riders. This calls for rules of origin that can get highly complex (and restrictive). For textiles, the U.S. is very insistent on a “yarn-forward” rule, meaning that a substantial percentage of the yarn, fabric and final article of clothing must originate from the parties to the agreement. This means that Vietnam cannot source, for many garments, fabric and yarn from nonparties, such as China, if it wants to get duty-free entry into the other TPP markets for the clothing it sews and assembles. That has been known for a long time and the negotiations are largely finished.

What arose as a surprise at the last round of talks in Maui was that the auto sector would have a similar problem – and it did, in spades. Mexico, Canada and the United States had agreed 20 years ago to have free trade in autos and auto parts so long as nearly two-thirds of the content came from the three signatories to the North American Free Trade Agreement (NAFTA). In the TPP agreement, Japan has been pushing wanted an origin rule that allows its carmakers to continue with existing sourcing, apparently a substantial portion of which, at least for one carmaker, would come from outside the 12 TPP countries (such as from Thailand).

So it wanted an origin rule effectively much lower than the level that NAFTA provides.

This was agreeable to the U.S., but Canada and Mexico balked. Intensive discussions since the July talks in Maui have focused on resolving this issue.

In a perfect world trading system, agreements would be global, and there would be no added complications introduced by regional trade agreements. But there is no consensus at the World Trade Organization for either new rules applying to all members or on broad trade agreements. The one current potential exception is the newly expanded Information Technology Agreement that would cover 90% of world trade in covered products, so that the free-rider problem is marginalized and the duty-free trade will be applied to all products regardless of where they come from. The stalemate at the WTO leaves countries that want to move forward having to do so on a regional basis, and that means applying rules of origin to restrict, insofar as is practical, the benefits to the parties. In a world of global supply chains and global markets, this often makes little sense for producers or for consumers. But until a much broader international consensus emerges at the WTO, regional agreements will continue to proliferate.

Alan Wolff practices international trade law with Dentons in Washington, D.C. He is Chairman of the National Foreign Trade Council (NFTC) and served as a U.S. Deputy Trade Representative.