Whether the person has a passport or not, if that person has been convicted as a criminal in the past, or you suspect that person has committed serious crimes and would offend, whether that be children or a country or what have you, would you not then feel it is your responsibility...? What criteria would you use to actually notify that country? Is it what kind of offence it is? And would the passport make any difference, whether the person has citizenship or not? It could be a landed immigrant or citizens or dual citizens. Does that matter? You know that person has been a criminal and may reoffend. Would you not feel it's your responsibility to either tell CBSA or the foreign countries?