I think there has been some speculation that having signed the treaty, the government spent a lot of time consulting with the Canadian defence forces, which at that time had as chief of staff Rick Hillier, who had spent a lot of his time embedded with U.S. forces.
Je crois qu'on a laissé entendre qu'après avoir signé le traité, le gouvernement a longuement consulté les force de défense canadiennes, dont le chef d'état-major de l'époque, Rick Hillier, avait passé beaucoup de temps au sein des forces américaines.