Again what's important to remember is that when we are looking at an application, the entry and exit data would come into play to validate information that would already be provided by the applicant as part of the application.
When we look at the application, there are a number of factors and sources of information. It always depends on the type of application. For example, you can ask for judicial review and you have a right of appeal in certain applications. You also have the Privacy Act that allows you to seek access to your record and make corrections if there are issues raised. That's another avenue that clients can avail themselves of.
There is also procedural fairness built into some of the process. Prior to making a decision, there are mechanisms by which we can communicate with the client to say, “Here are some of our doubts and some of our questions. Can you provide more answers before we make a decision?”
There are different tools, depending on the type of application and the seriousness of the potential inadmissibility, but also through the privacy regime that we have here in Canada.