All speculative rubbish and scare-mongering. This story has been around for years.

First, climate change is real, and its happening, and it is already having devastating impacts. Dealing with it is not a luxury add-on, a silly frill.

Second, competitive advantage is the product of many different factors. Pointing the finger at climate reduction as the difference between sink or swim is completely simplistic and therefore unconvincing.

Third, if the US industry operates more cheaply, then industry needs to operate more cheaply by reducing other costs. I bet Canadian labour is super expensive. 

Fourth, I bet the US industry actually isn't much cheaper than the Canadian industry. Of course the oil industry hates climate change. This type of tactic only proves again how much we need aggressive carbon pricing.