For example, the United States implemented restrictions on interest deductibility. Those have an initial impact, which we then attempt to understand, in terms of the propensity of corporations to shift interest expense to Canada in response to that measure. I believe that in 2022, those restrictions in the U.S. become more concentrated on U.S. corporations, so we want to understand and monitor the impact on our tax base. To do that requires building complicated models, looking at the tax data and modelling the impacts, both present and future, on Canadian corporations and the tax system more generally.
On June 18th, 2019. See this statement in context.