I'm not an expert on the federal finances and estimates, so I would rather not express an opinion on something that I don't think I'm qualified to do.
I can speak to the Ontario experience. I think requiring tax expenditures to be disclosed that way leads to greater transparency and, frankly, better budgeting in terms of trade-offs. It allows us at Treasury Board to examine the effectiveness of a program delivered through the tax system just as much as we look at the effectiveness of a program delivered through the grant system. Ultimately, again from a public policy perspective, what our ministers ask us—and certainly my minister asks me—to opine on is how we can ensure that programs are delivering on intended outcomes. I think it's the same question whether a program is delivered through a grant or a tax expenditure.