‘Worst tax ever’: Ontario to square up against Ottawa in court over carbon tax fight

TORONTO — The federal and Ontario governments are set to square off in the province’s top court this week over Ottawa’s climate change law in a fight experts say is as much political and ideological as it is legal.

At issue is the validity of Liberal government legislation that kicked in on April 1 and imposed a charge on gasoline and other fossil fuels as well as on industrial polluters. The law applies in those provinces that have no carbon-pricing regime of their own that meets national standards.