Trudeau's counter-tariffs take effect today - a month after the Trump administration slapped duties on USA steel and aluminum imports from Canada and other allies.
As part of his combative America First approach, President Trump has repeatedly attacked the trade policies of the United States' northern neighbor, citing Canada's triple-digit tariffs on dairy products, which account for only about 0.1 percent of U.S.
A government official familiar with the plan says now that Mexico's presidential election is done, Ottawa wants to restart talks as soon as possible, even though Trump says he won't sign a new deal until after USA voters go to the polls in November. Canadian Foreign Minister Chrystia Freeland announced the tariffs at a steel facility in Hamilton, Ontario where she was flanked by brawny workers in yellow hardhats.
That comment seemed to refer less to the USA elections and more to the vote on Sunday that's expected to sweep Andres Manuel Lopez Obrador into power as Mexico's first leftist leader in decades - certainly an "interesting" outcome for Trump and others.
Mexican president-elect Andres Manuel Lopez Obrador said he supports the continued renegotiation of NAFTA.
Trump said in an interview that aired Sunday that he could quickly sign an agreement with the United States' neighbours, "but I'm not happy with it".
"Canada's workers build the roads and bridges that get us to work on time and back home again".
On Ottawa's tariffs on USA goods, White House spokeswoman Sarah Huckabee Sanders said Monday that it does nothing to help Canada and only hurts American workers.
In the Fox News interview, Trump said he proposed to his G7 partners at last month's summit in Quebec that they remove all trade-related barriers and taxes. Do you know what happened?
President Donald Trump infuriated USA allies - from Canada to Mexico and the European Union - by imposing tariffs of 25 percent on imported steel and 10 percent on aluminum.
"The two leaders agreed to stay in close touch on a way forward", according to the prime minister's office.