ALPA Canada represents 8 carriers in Canada if I remember correctly. Good luck to any Cargojet folks who try to climb the aviation ladder to get a job at any of those carriers if their name is on that list. I'm not sure what ties the IBT have in Canadian aviation, but rest assured that the names of the damned will be known to all who matter if a job is concerned.
What makes you think that ALPA has ANY say in who is hired at ANY carrier?
Are the laws that different in Canada, that they allow a company to maintain a "scab list" and screen potential hires from it? Somehow, I think not!