Thanks to the witnesses for being here. I'm going to go on to some of what my colleagues touched on. When we talk about the NSE, we've heard complaints that it was overused, and we've seen with the CITT that there were some comments made.
Mr. Grammond, you've touched on the policy. I'd like to ask all of you three if you know, from your experience in other jurisdictions—let's say in the United States, where we know that they use the national security exception—whether there is a policy to justify the NSE in the United States or other jurisdictions?