Immigration detention does not go unreviewed. The Immigration Division has to look at the reasons within 48 hours, again within the next seven days, and then at least once every 30 days for as long as the person is held. An officer has to bring the person to each review.
(1)Within 48 hours after a permanent resident or a foreign national is taken into detention, or without delay afterward, the Immigration Division must review the reasons for the continued detention.
57.1 (1) Despite subsections 57(1) and (2), in the case of a designated foreign national who was 16 years of age or older on the day of the arrival that is the subject of the designation in question, the Immigration Division must review the reasons for their continued detention within 14 days after the day on which that person is taken into detention, or without delay afterward. (2) Despite subsection 57(2), in the case of the designated foreign national referred to in subsection (1), the Immigration Division must review again the reasons for their continued detention on the expiry of six months following the conclusion of the previous review and may not do so before the expiry of that period. (3) In a review under subsection (1) or (2), the officer must bring the designated foreign national before the Immigration Division or to a place specified by it.