The onus is on industry to provide data to the federal government, Health Canada, and Environment Canada, in order to allow us to assess that. So they do provide us data, and they make assertations about the safety, and we double-check those.
It's important to know that even with reverse onus for existing substances, that would not be a silver bullet; we would still have to assess and validate all of the claims made by any industry. That's a process we always go through.