That's not correct. For our officers overseas who are processing visitors, immigrants, and so on, we may come across situations where we would refuse a case to come to Canada. If someone arrives at a port of entry, that's CBSA; CBSA is processing the cases. They may find that somebody is inadmissible, write an inadmissibility report, and order them deported or removed. Or they may be in Canada and have gone through a process but suddenly are no longer entitled to stay in Canada. In that case, at that point they may be written up for being inadmissible. Then it could be written up by somebody at CBSA and, in some small circumstances, by officers at CIC. Based on that removal order, CBSA would take action.
But because often the inadmissibility report is written after an investigation of some type, or an enforcement action, the large majority of those are CBSA actions.