What the amendment does is very simple. The only thing that is new here is proposed paragraph (a), and it's the same for clauses 371, 372, and 373. Paragraph (b) already exists; it's already in the act.
Basically, as Mr. Saxton indicated, it's to protect current GIS beneficiaries. I'm going to give you an example.
I would think it would be very rare, but not impossible, that someone who has recently immigrated to Canada, reached 10 years of residence in Canada—for example, last year—but is still under a sponsorship agreement. This is possible if the person were in Canada previously and accumulated a period of residence at that time. For example, if they came in the seventies to undertake university studies and then they came back to Canada under a sponsorship agreement, they would reach the 10 years of residence in Canada while their sponsorship were still on. After they reach 10 years, under the status quo, they can start receiving the GIS, but in 2017, once the amendment kicks in, they would lose the GIS because they're still sponsored.
We don't want this to happen. We want to protect these individuals so this is what paragraph (a) does here, which is to make sure that people in receipt of the guaranteed income supplement or the allowances—in the case of clauses 372 and 373—are protected by the time the provision comes into force. They will not see their benefits cut. So it's simply a protective measure.