I agree with that observation by Steve. I think, where possible, doing this multilaterally through the OECD is clearly the best outcome. I think that there are a couple of concerns with digital DSTs from a U.S. perspective. One is that there have been various DST proposals, not just in Canada but in other countries, so part of the concern that the U.S. has with the DST in Canada, I think, is its precedential implications. It green-lights and provides cover for other countries going down that pathway. Whatever the actual economic impact of that tax is going to be, I think the precedential implications will focus minds in the U.S. as well.
I don't want to get into the weeds, but I think there are genuine questions around the retroactivity elements to it, which you mentioned. The fact that it's a tax on revenue rather than profits can create various perverse incentives for businesses. That's a genuine issue, I think, for Canada in terms of the design of the DST. However, it's clearly one of those irritants that will come up, I would expect, in the lead-up to the joint review.