As you know, I have commented on Bill C-51 as to the standard under which information-sharing is permitted. In my opinion, the standard established under Bill C-51 is too permissive when it comes to information sharing. I stand by those comments.
You are asking if there is a risk that the sharing is too broad. That's why I insist on the purposes for which the information is collected and shared. In this case, it's a matter of national security. It's quite possible that the sharing is reasonable for an individual who presents a national security risk. However, when it comes to sharing information on all travellers who leave Canada to go to the United States, there is obviously a question of sharing information about law-abiding citizens, in order to target individuals who may be problematic from a national security perspective. This is a reasonable step. However, as soon as this mass of information shared with CSIS, for example, indicates that people are not posing a risk, it is important that the information be destroyed and not used. That's why I'm talking about a period of data retention.
The gathering of information and the initial sharing of information for national security purposes may be reasonable, but it is important to have retention rules that require the destruction of documents as soon as a person is considered a traveller and not a national security risk.