Mr. MacDonald, thank you for the question. Thank you for joining us, I hope, from the great province of Prince Edward Island this morning.
You're absolutely right. As my colleague the Minister of Immigration has said, and I have said the same thing, there needs to be a review of all of the steps surrounding this case, with the relevant dates, to understand exactly who knew what and when and whether changes or adjustments need to be made in terms of these screening protocols. The officials with me today are working on precisely that.
Our adversaries, threat actors who are seeking to do harm to Canada or to do harm to Canadians, are constantly evolving their measures and adjusting their measures. CSIS has talked about this publicly. Obviously the portfolios of Public Safety and the other agencies are evolving to ensure we have the very best measures in place for the safety of Canadians.
Mr. MacDonald, on your specific question around what reviews are taking place to ensure that we have this information, perhaps Mr. Gallivan from the Canada Border Services Agency or Ms. Lloyd from CSIS can talk briefly about the work they're doing. Of course, our colleagues at the immigration department are doing the same work and in some cases overlapping our work.
Perhaps Mr. Gallivan could add something.