With a 4-1 decision, the Alberta Court of Appeal ruled the federal carbon tax as unconstitutional. Their claim is that the levy erodes provincial jurisdiction.

While the federal government states that climate change is a national concern, Alberta disagrees. Alberta believes that climate change is not a concern that requires the federal government’s overriding intervention.

Meanwhile, courts in Saskatchewan and Ontario have upheld the carbon tax, but the Supreme Court will hear Saskatchewan’s appeal this spring.