"I'm sure that the president looks forward to coming to Canada and meeting all the other leaders with many, many important issues going on throughout the world". Ross offered little detail about what the enumerated states could do to have the tariffs lifted.
He said G7 officials expressed concern to US Treasury Secretary Steven Mnuchin during the session on trade that the US tariffs posed a risk to global economic growth.
The commissioner refused to say Mr Trump had started a trade war, but said he had created a "very worrying situation".
Germany's Volkswagen, Europe's largest automaker, warned that the United States action could start a trade war that no side would win.
Canada and Mexico, who were also hit by the tariffs, are still planning their own retaliatory moves. The U.S. team also wants to secure greater intellectual property protections and an end to Chinese subsidies that have contributed to overproduction of steel and aluminum. "People have no idea how badly our country has been treated by other countries".
The freshly introduced metal tariffs reportedly threaten €6.4 billion ($7.4 billion) worth of European exports to the US.
WASHINGTON/BRUSSELS Canada, Mexico and the European Union retaliated against U.S. tariffs on steel and aluminium with levies on billions of dollars of United States goods - from orange juice and whiskey to blue jeans and Harley Davidson bikes.
Germany's carmakers are especially braced for the latest threat from Trump, who earlier this month launched proceedings that could eventually slap 25 per cent tariffs on auto imports.More news: The heartbreaking reaction as injury cruelly ends Mo Salah's Champions League final
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"This is a bad day for world trade".
"When they say America First, we say Europe United", she said.
The response followed Washington's decision on Thursday to impose a 25 percent tariff on steel imports and a 10 percent tariff on aluminum imports from the EU, Canada and Mexico. Exemptions expired for Canada, Mexico and European Union countries on Friday, while Japanese metals producers have been paying the levies since March 23. The metal tariffs will come into force at midnight (04:00 GMT) on Friday.
USA companies, too, have warned about the negative impact of the tariffs which will raise their costs.
Theresa May has broken her silence over the escalating trade war between the U.S. and its allies, saying that the European Union and the United Kingdom should be "permanently exempted" from tariffs.
Canadian authorities said they would take retaliatory steps, responding to the U.S. metal tariffs, according to government sources, as quoted by Canadian TV channel Global News. Canada unveiled a package of counter-tariffs on United States imports valued at Can$16.6 billion (US$12.8 billion). "The US economy will suffer as much as any other economy".
She added: "This is further weakening the transatlantic relations and it also increases the risk of severe turbulences in the markets globally".
"I had to highlight there was no possibility of any Canadian prime minister signing a NAFTA deal that included a five-year sunset clause and obviously the visit didn't happen", Trudeau said.
The EU has already issued a 10-page list of tariffs on U.S. goods ranging from Harley-Davidson motorcycles to bourbon.