I could add some comments to what my colleague said.
Under the IRPA, the CBSA is permitted to detain individuals for three reasons. These are where there's a question of identity, where there's concern about a danger to the public, and where there may be a concern about flight risk—that the individual will fail to show for a hearing.
I can also tell you that the agency has a strong quality assurance program that involves access by the Canadian Council for Refugees and representatives in Canada from the United Nations High Commissioner for Refugees, who come into our detention centres to monitor, to ensure that Canada is complying with international norms, and also respecting our domestic legislation.
These are some of the factors that help the agency manage the detention population on an ongoing basis.