The Saskatchewan premier’s resistance to Ottawa goes beyond the federal carbon tax to provincial rights, gun control, and parental rights.

Out of the five conservative leaders featured on the 2018 Maclean’s magazine cover headlined “The resistance,” only two are still in their leadership roles: Saskatchewan Premier Scott Moe and Ontario Premier Doug Ford.

“A carbon tax? Just try them,” was the cover story’s headline. It’s a statement that sums up Mr. Moe’s recent challenge to Ottawa on the carbon tax. He said last week he’s serious about halting the collection of all carbon taxes on natural gas starting Jan. 1, no matter what federal law says.

The three other leaders have since resigned their posts: former premiers Jason Kenney of Alberta and Brian Pallister of Manitoba, and former federal Conservative leader Andrew Scheer. Mr. Ford remains in power and has posed some resistance to the feds, but arguably doesn’t seem to clash with Liberal Ottawa as often as does Mr. Moe.