Mr. Chair, I may be able to help.
It does occur in other crown corporations. It is not universal, so you're right to sort of recognize it as something that is different from what you might see regularly. Typically, my experience has been that appointments of government officials in an ex officio capacity has a lot to do with the significance of the institution to the broader mandates of the government. Just as an example, the Canada Deposit Insurance Corporation is another where there are ex officio members from, say, the Department of Finance. The Canada Mortgage and Housing Corporation likewise has done something very similar to bring in members from government departments. This is given the systemic nature of some of the fiscal liabilities and issues that those organizations are managing.