Trump hands Canada 10% extra import tax for not pulling anti-tariff ad sooner

US President Donald Trump speaks with reporters aboard Air Force One at Al Udeid Air Base in Doha, Qatar (Mark Schiefelbein/AP)

US President Donald Trump said on Saturday that he plans to hike tariffs on imports of Canadian goods by an extra 10% because of an anti-tariff television ad aired by the province of Ontario.

The ad used the words of former president Ronald Reagan to criticise US tariffs, angering Mr Trump who said he would end trade talks with Canada.