The New York university has been a target of the Trump administration after it became a major encampment for students protesting the war in Gaza

Canadian prime minister Justin Trudeau has scrambled to convince Donald Trump to lift tariffs on his country, which together with Mexico and China is one of the US’s largest trading partners.

That effort included a phone call between the two leaders on Wednesday, which appears to have had some effect – on Thursday, Trump exempted Canada from some of the tariffs he had imposed, along with Mexico.

Trudeau responded Tuesday by placing tariffs on the US, and he questioned whether further negotiations would make any difference, accusing Trump of acting in “bad faith.” The two leaders eventually spoke Wednesday morning, an exchange Trump said ended in a “somewhat” friendly manner. A person familiar with the matter said the call grew heated and included profanity.