U.S. denim, bourbon, motorcycles, peanut butter, motor boats and cigarettes are also in the firing line. Trade Commissioner Cecilia Malmstrom added that the USA, through months of negotiations, threatened steep tariffs in order to obtain trade concessions from the EU.
Freeland also pledged to request the establishment of a NAFTA Chapter 20 panel to "address the United States' violation of NAFTA rules".
European Union exports of steel to the United States were worth 5.3 billion euros (4.6 billion pounds) in 2017. The list includes roughly 160 products such as U.S. sunbeds, paper towels, corduroy trousers and porcelain tableware that could face European Union tariffs between 10% to 50%.
For Massachusetts, which has many businesses that rely on raw materials but few - if any - steel and aluminium producers, the measures meant to protect the American economy could hurt. If the WTO has not issued a ruling within three years, the tariffs could be implemented unilaterally.
The July 1 deadline for Canadian tariffs to take effect provides a window for Canada and the U.S.to still broker a deal, perhaps in the framework of a NAFTA agreement. "Highly restrictive on trade!" he wrote.
In his statement announcing the tariffs on Thursday, May 31, Trump called the decision, among other things, "a satisfactory alternative means to address the threat to the national security". That could spark another round of escalation.
"The US is playing a risky game", Malmström told reporters". We are not seeking to escalate the situation.
"We have to respond strongly to it and make it clear to him that we're not susceptible to the intimidation and the threats and the bullying that he's putting in place".
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Trump has maintained that his government will impose the tariffs unless a "fair" NAFTA deal is signed.
Mr Gardiner, speaking to Radio 4's Today programme, said: "The president has said that he believes he could win a trade war, we think that a trade war is in nobody's interests".
"We will still be making that case throughout this week", he said.
Brussels submitted a list to the WTO of USA products that could be slapped with punitive import duties.
"These unilateral tariffs, imposed under a false pretext of safeguarding USA national security, are inconsistent with the United States' global trade obligations and WTO rules", Foreign Minister Chrystia Freeland said in a statement.
"European steel and aluminium exports to the United States can not be seen as a threat to their internal security".
Canadian Prime Minister Justin Trudeau said today he offered to go to Washington this week to complete talks on renegotiating the North American Free Trade agreement but that Vice President Mike Pence called and told him a meeting with the USA president would only happen if Trudeau agreed to put a five-year sunset clause into the deal.