I will ask Marie-Josée to expand on that, but I have two comments on my part.
One, the Department of Industry is involved in a wide range of endeavours and activities, ranging from our involvement with the auto sector to the aerospace sector, marquee festivals, and the knowledge infrastructure program. Public security is not in our sweet spot; we are not the department with expertise relating to matters of national security. There's another department whose day-to-day, bread-and-butter activities involve national security, the Department of Public Safety. They are the ones we would turn to for guidance in deciding, or providing advice to our minister, in regards to what are and are not matters of national security.
Secondly, this clause dealing with national security is a recent addition to the Investment Canada Act. It was brought in as part of the budget implementation act, and therefore, there have not been many cases discussed under this heading.