If the US imposes import taxes as the president has threatened, its neighbour is mulling a range of targeted responses.

The leader of Ontario, Canada’s most populous province, has kicked off his provincial election campaign, saying he needs a strong mandate to fight the tariffs threatened by U.S.

Ontario Progressive Conservative leader Doug Ford launched his re-election campaign in Windsor, Ont. Wednesday and is asking residents of Ontario for a "strong, stable, four year mandate to do whatever it takes to protect Ontario.

Ontario premier Doug Ford has triggered an early election in the province, saying he needs a strong mandate to take on the tariff threat.

Ontario's political party leaders are fanning out across the province today for their first official day on the snowy campaign trail.