Because all of Canada is going to implement a national carbon price:
Canada will implement a national policy to charge polluters for emitting carbon dioxide by the end of the year, a top government official said.
Catherine McKenna, Canada’s environment minister, told Bloomberg TV Canada that the goal of the policy is a uniform national carbon price, along with new requirements for companies to disclose emissions. ...
Four provinces representing about 80 percent of Canada’s population currently have some kind of carbon pricing policies, which usually consist of either a carbon tax or cap-and-trade system.
Asked whether her pledge means that provinces and territories without a tax currently would be forced to implement one, McKenna told Bloomberg, “I don’t like the word forced. I think this is really an opportunity.”
Causing billions in job losses and a massive southerly migration of workers.
Er, maybe not. Brian Murray and Nicholas Rivers [PDF]:
Empirical and simulation models suggest that the [British Columbia carbon] tax has reduced emissions in the province by 5–15%. At the same time, models show that the tax has had negligible effects on aggregate economic performance, though certain emissions-intensive sectors have faced challenges. Studies differ on the effects of the policy on income distribution but agree that they are relatively small. Finally, polling data show that the public initially opposed the tax but now generally supports it.