Trudeau said it was "inconceivable" to call Canada a national security threat and "an affront" to a country whose soldiers have fought and died alongside American soldiers from Normandy to Korea to Afghanistan.
The Prime Minister of Canada Justin Trudeau said he would work with canadian steel companies and manufacturers of aluminium affected by the input of US customs duties to keep the old number of jobs in this industry.
"When you're nearly 800 Billion Dollars a year down on Trade, you can't lose a Trade War!"
President Trump originally imposed the tariffs in March, claiming that if the U.S. remained reliant on imported metals, it would threaten the country's national security and damage its own metal industry.
"Everyone expressed their complete incomprehension of the American decisions and everyone said it was up to the Americans to take the next step since they were the ones who imposed the tariffs", Le Maire told reporters. "Ultimately, we will shift some production, there's no question and I think long term, it would be a disaster for Canada and the U.S".
Trump has been critical of the North American Free Trade Agreement (NAFTA) with Canada and Mexico, saying it has harmed the United States economically.
Describing the North America Free Trade Agreement (NAFTA) as a bad deal for the United States, Trump said people were starting to see it.
Later this week, Trump is due to visit Canada for the Trudeau-hosted G7 summit, which will take place at a remote luxury resort in La Malbaie, Quebeca, and where he will meet with leaders of Germany, Italy, France, UK and Japan.
Mnuchin, regarded as one of the more moderate trade voices in Trump´s cabinet, said the issue may need to be resolved by G7 leaders at a summit next week in Charlevoix, Quebec, officials attending the meetings said.
Steel imports from those countries will now be subject to a 25% tariff, and aluminum imports will be subject to a 10% tariff.
President Donald Trump's chief economic adviser is brushing off concerns over escalating trade disputes with a host of USA allies as nothing but a "family quarrel".
Speaking after the meeting, Le Maire said the European Union was poised to take counter-measures against the new U.S. tariffs. "We actually buy a lot of USA steel, bring it into Canada turn it into something else and send it back to the United States so we're actually helping the USA economy so we're one of the innocent bystanders stuck in the middle".
"I think he's overreacting", Kudlow said of Trudeau.
"The tariffs ... are completely unacceptable, and in fact they are illegal", said Foreign Affairs Minister Chrystia Freeland.
On Thursday, the Trump administration imposed steel and aluminum tariffs on Mexico, Canada and the European Union.
"Living next to you (the U.S.) is in some ways like sleeping with an elephant". Mr Trudeau said Canada would respond with dollar-for-dollar retaliatory tariffs, and said a proposed meeting with Mr Trump to potentially secure a Nafta deal collapsed after Vice-President Mike Pence called and insisted the meeting was conditional on adding a sunset clause.
On Thursday, Trudeau announced that the country would impose its own tariffs on United States' goods in retaliation to Washington D.C.'s steel and aluminium tariffs.