The American president said the Canada-U.S. boundary could disappear when he spoke with the prime minister Monday, according to details Trudeau revealed behind closed doors on Friday.

Even as Canada’s prime minister announced more than $100 billion in retaliatory tariffs, he made clear that he was imposing them reluctantly.

President Trump ratified an executive order that pledged to impose a tariff of 25% on all goods from Canada, as well as a 10% tariff