Thank you very much, honourable member. Maybe I'll begin.
It was in a previous round—you're correct—that the U.S. returned four billion dollars' worth of duties. One billion dollars was retained under the previous agreement.
In the current round, the U.S. is once again collecting duties. It would be our aim in a negotiated agreement to get all the duties back for Canadian companies. It would, of course, be part of the negotiations.
With respect to WTO aspects, maybe I'll turn it over to Mike Owen, our litigator.