It was apparently a reference to the War of 1812, in which case it was erroneous - it was the British who did it.
That's because Trudeau and Macron are expected to reiterate their previous messaging at the G7 summit, and claim that Trump's tariffs will hurt American workers and damage the U.S.' image internationally. In a tweet the next morning, he mused about shutting Canadian wood products out of America.
"The introduction, for example, of restrictive tariffs on steel, on aluminum, not only for Europe but also for Canada and Mexico, in essence these are also sanctions..."
Trump's imposition of steel and aluminum tariffs, as well as broader disagreements on trade, climate change and the US withdrawal from the Iran nuclear agreement, are setting the stage for some tense talks once Trump arrives Friday at the Quebec summit.
The fight has pushed relations between Canada and its closest commercial and diplomatic partner to their tensest time in recent memory, with $900-billion of annual trade in the balance.
Robert Bothwell, a professor at the University of Toronto, said Trump's actions appear meant to break Canada at the negotiating table.
Canada, in particular, has taken offense at the notion that the steel tariffs are justified on the basis of national security concerns. "And they understand it's going to happen", Mr Trump said before leaving Washington on Friday.
While making his suggestion for Russian Federation to be readmitted to the G7, the President said on Friday that he had "been Russia's worst nightmare". Trump will then head to Singapore ahead of his highly-anticipated meeting with North Korean leader Kim Jong Un on Tuesday.
Nothing US President Donald Trump is doing will "make the world better, safer or more peaceful", German Foreign Minister Heiko Maas told the daily Süddeutsche Zeitung on Friday. "But he doesn't bring up the fact that they charge us up to 300% on dairy - hurting our Farmers, killing our Agriculture", the U.S. president said. Canada has countered with a plan to impose tariffs of its own on USA metals and other consumer goods.
"This is the first time the USA government is seen as truly acting in bad faith, in treating allies as a threat, in treating trade as negative and fundamentally undermining the system that it built", said Adam Posen, president of the Peterson Institute for International Economics. And French President Emmanuel Macron this week threatened to drop the United States from the group's final agreement altogether.
"There have always been little tiffs that are part of doing business".
"The global trade system is broken and President Trump is trying to fix it". "When we can underscore this, and we see that there's a lot of pressure within the USA, perhaps he will revise his position".
"I believe it can be worked out", top White House economic adviser Larry Kudlow told reporters on Wednesday.
The president said he was unconcerned about raising a trade ruckus at the gathering that usually emphasizes unity and downplays its disagreements.