The top business risk of the Trump presidency for heavy-duty equipment maker Komatsu is not the tariffs he has threatened, but Canada's potential retaliatory duties on American-made mining machines, the head of the Japanese company said.

President-elect Donald Trump's proposed tariffs on Canada haven't even gone into effect and they've already plunged Prime Minister Justin Trudeau's government into turmoil. On Monday, Trudeau's finance minister and deputy prime minister resigned,

The government has pledged a joint task force and aerial surveillance, as well as a host of other measures.

Trump tariffs? For Japan Inc, Canada’s retaliation is a worry too | REUTERS The top business risk of the Trump presidency for heavy-duty equipment maker Komatsu is not the tariffs he has threatened, but Canada's potential retaliatory duties on American-made mining machines,

Japans Komatsu braces for challenges as Canadas tariff threats on U.S. mining equipment exports spark concerns, raising stakes for the worlds second-largest construction machinery company under Trumps trade agenda.