Can a Temporary Resident Permit be cancelled after it is issued?

Yes. A TRP can be cancelled after it's issued, generally by an officer who becomes satisfied that the original justification for it no longer holds — for example, if new information emerges about the person's conduct, if the stated purpose for the permit turns out not to be genuine, or if circumstances change in a way that undermines the balance that supported issuing it in the first place.

Cancellation is a discretionary decision, not an automatic consequence of any single event, but it can happen without the holder necessarily anticipating it if new concerns come to an officer's attention, including at a port of entry on a later trip. A cancelled TRP generally means the person's authorization to be in Canada under that permit ends, which can also affect related things like a work or study authorization that was tied to it.

Because cancellation can have significant, sometimes sudden consequences, TRP holders should be careful to keep behaving consistently with what was represented when the permit was issued, respond honestly to any questions raised by officers, and get legal advice quickly if they become aware of anything that might call the original justification into question.