Obviously, removals are the purview of the CBSA, so I'm sure they would be able to offer more detail on that.
What I can say about the removal process itself is that from the time someone is deemed to be required to be removed, they have access first to the IRB and then to the courts after that, should they feel that their circumstances warrant a review from an outside body. Once they've exhausted those options, the CBSA would work with international partners, in some cases, to ensure that we have the capacity to then remove them to their country of origin.