One of the key principles we're trying to address in the SPP is not whether the standards are higher or lower, because individual governments make that decision, but whether or not, when there are different standards, the reasons for those differences are ones that governments have thought through.
You have three individual governments producing regulations in a myriad of areas. What we want to ask ourselves is whether, as we produce those individual regulations, we have thought through whether or not the regulations help the people who are producing things in North America to continue to produce them and exchange them, so that at least you would turn your mind as a government to whether or not a different set of regulations needs to be different.
There may well be reasons why they need to be different, due to geography, different values, etc., but the differences may well not be ones that governments have actually thought about or considered, in terms of developing their individual national regulations.