Amending Canada’s citizenship laws to provide for denaturalization of “traitors and terrorists”, as proposed by the current federal government, is an idea consumed with legal flaws. To comply with international law on the prohibition of citizenship deprivation that would result in statelessness, any such amendments would have to apply only to individuals with dual citizenship. However, targeting those individuals would be very hard to defend against equality-based challenges under the Canadian Charter of Rights and Freedoms. In addition, denaturalization of “traitors and terrorists” might well be perceived as a punitive measure, whose impact and stigma would call for constitutional procedural protections far stronger than those set out in the current Citizenship Act and the proposed revisions to it. Such denaturalization also seems unlikely to advance any clear Canadian national security interest, and would accomplish less than can be done through other laws, including the Criminal Code.