CAPTION: Saskatchewan Premier Scott Moe says he doesn’t believe the federal government has the right to impose a carbon tax, and is asking the province's Appeal Court for a ruling.

Saskatchewan’s NDP leader calls the move “expensive” and “risky.” (April 25, 2018) 1.

SOUNDBITE: Scott Moe, Saskatchewan Premier 2.

SOUNDBITE: Ryan Meili, Saskatchewan’s NDP leader PLACELINE: Regina CREDIT: The Canadian Press STORYLINE: The Saskatchewan government is asking the province's Appeal Court to rule on whether the federal government can impose a carbon tax.

Saskatchewan wants to know whether Ottawa's plan to bring in a carbon price for provinces that don't have one violates the Constitution.

Premier Scott Moe's government has consistently fought against the carbon tax, arguing the province's own climate-change plans are sufficient to reduce emissions.