Right now, it doesn't exist in the way you describe it. That's why we submitted an action plan to properly document the cases. It's also why we made a commitment to accountability and to implementing that plan.
With regard to the 153,000 students, after doing the review, which hadn't been done when the Auditor General's office came to see us, we found out that they had changed schools. These are not instances of fraud; they're paperwork issues. That has been corrected. Their status changed. They got a work permit, and there's no problem. However, in a significant number of cases, there is a problem.
We didn't know how many cases needed to be reviewed, so the department allocated funds for about 2,000 cases.
We are committed to investigating all cases that have no reasonable explanation and that are actually problematic, such as someone who stays in the country when they shouldn't, who isn't studying, who isn't working, and so on.
We are committed to finding them and contacting them. You're absolutely right that, when someone doesn't answer, we should try to contact them again several times, not close their file. That's essentially what it says in the detailed action plan that IRCC submitted to the committee.