When Trump posted 51st State on June 1, using Poilievre’s Liberal recession framing as his justification, the practical consequence of this strategy became visible in a single post. Domestic political messaging, produced by the Leader of the Official Opposition and amplified uncritically by Canadian media, travelled across the border and was deployed by a foreign president as an argument for annexing Canada. The country whose sovereignty Harper and Poilievre claim to be defending is being threatened in part by the political network they have built and the narratives they continue to feed into the international information environment.