I'm not entirely sure I know which set of rules you would wish to challenge, the internal trade rules or the international trade rules. In respect of international trade rules and subsidies, they are difficult cases to make and they require a large investment in terms of time, and even expenditure, in the sense of the analytics that have to go into making a subsidy case.
As well, my first lesson on subsidies was to learn that you need a violation of the rules; second, you need somebody who's willing to challenge, because there are subsidy practices in almost all countries that, at least in theory, could be challenged. So there's a little bit of “glass houses” in respect of subsidy challenges.
In the Doha Round, there would be the possibility of dealing with both tariff and non-tariff barrier issues, which is certainly one part of market access.
With regard to where we're going on subsidy rules in general, it's frankly too early to tell. The chairman of that part of the negotiations, the so-called rules negotiations, essentially withdrew his text after the failure in July and agreed to start over. It's a little too early to tell what additional disciplines, what new constraints on subsidies might arise in the Doha negotiations.