Certainly. I'll start, and perhaps Geoff can carry on.
I also read with interest the statements of Citizenship and Immigration Canada on this subject last week. It is a two-step process, in effect. The marriage is looked at from the point of view of issuing a visa overseas, and then in Canada, where something doesn't look quite right in the marriage, it might be referred to us for our interest.
I think Geoff gave some of the statistics on the numbers of cases that we look at. I don't have them offhand. I'll let him remind you of those, but I believe that Citizenship and Immigration Canada indicated that about 30% of the sponsorships that come forward present as being not bona fide.