I'll try my best.
Your first question is about the wisdom of allowing this to take place. In essence what happened in Bill C-25--or it's Bill C-13 now--chapter 25 of the Statutes of Canada 2005, was to permit the domestic sharing of information concerning what we call a moderate match.
I don't know if you recall the last testimony that we had—I think you had to leave when I tried to respond to your previous question on this—but it should be on the record.
Moderate matches are cases where we don't understand whether or not we have a clear match, given the scientific problems of analysis. I understand there are cases where you have mixtures of DNA from victims and perpetrators. You have cases where DNA evidence is degraded due to age. It's an old crime scene, or bodies are found and it's difficult to be absolutely certain what those amplified DNA profiles are.
So in the convicted offender index you have what we call, or at least what the scientists inform me is, a gold standard. These are samples, body substances, taken from people at the time—usually blood in clean circumstances—from which they are able to derive very good profiles. In most cases the amount of scientific failure to derive a profile is statistically very small in the number of rejected cases. I can't tell you what exactly that is, but it's very small. So we have a high reliance on the convicted offender index profiles. The crime scene profiles can be mixtures, degraded profiles, so it may be difficult to tell whether or not there is exactly the same profile from the crime scene.
So the ability was put into Bill C-13 to allow moderate match profiles to be exchanged. There's no personal information. It's simply a matter of putting to the people in the crime scene labs: here's the profile we have; is it possible that the profile you have is the same but you just misread it, or you weren't able to derive it properly? Then they can reanalyze and say yes, this is a match, or no, it's not. The personal information would then be requested separately for further investigation. It may be linked to another crime scene; it may be linked to the convicted offender index. That's the reason we have this provision in Bill C-13.
What we're asking for in Bill C-18 is the ability to do exactly the same thing with national comparisons.
As I tried to explain before, there is a great chance that international comparisons will be using parts of the DNA profile that we don't necessarily analyze in our system, but they do. So there may be only a limited number of matches between the same loci, and that leads to a higher incidence of probability of moderate match requirements to determine whether we have an exact match.
If this work isn't done at one level, in other words, as much as possible to reduce the potential matches.... It speeds up the investigations internally. It could be in the interests of our police forces to know whether we have an international offender, and it's certainly of interest to the foreign countries, for the same reason, to link crime scenes or offenders who are operating internationally together. Hence speed is of the essence in many of these investigations.
The result would be a speedier resolution of whether or not we have a match. If that information can't be sent abroad, then chances are it would be simply said that we don't have enough information to tell you whether or not you have a match. Then the information may be stalled, even though that could result in information of use to the police as an investigative lead in resolving an international serial offender, a terrorist, or some other event that is going on.
So the impetus for this international sharing is to simply ensure that the correct information about matches can be resolved scientifically between the analysts. There will be no sharing of personal information or even the resolution of a potential crime scene until it's resolved between the scientists whether or not they have a match, or a close enough match, that they'd want the information about the offenders or the other crime scene that it would link to.
So it's really to allow internationally the same thing we've been allowed to do domestically, and no more information will be shared internationally than would be allowed domestically for the same purposes. It's subject to our international agreement through INTERPOL, which limits the use of all of this information for the investigation and prosecution of a criminal offence. That's required now of the commissioner by the legislation and the DNA Identification Act, and it's been done through an INTERPOL master agreement. Each exchange of information is subject to a reiteration of the conditions that apply to the transfer of that DNA profile.