I have written a few Globe and Mail opinion pieces on these issues, and I'm happy to chat afterwards.
I think I'm pretty consistent on this: International students are great for Canada, but we have to get the design and the balance right. Whether someone stays or not, I would use the same criteria I've been talking about for the economic immigration program. At least permanently.... An international student should stay as an economic immigrant if we think that, 10 years from now, their earnings are going to be above average. This is going to be true of some college programs; it's going to be true of some—but not all—university programs. I think it's the fair way to do it. Otherwise, you're going to say, “You're a university professor; you're favouring universities.” I think we should let the data drive it.