The prime minister noted that the Trump administration indicated it would impose the tariffs under a rarely used provision of US law that allows a president to unilaterally declare tariffs to counter threats to national security.
"Kooky 18th century protectionism will jack up prices on American families - and will prompt retaliation from other countries", Sasse continued.
It also follows recent U.S. trade attacks on other major Canadian sectors including forestry and aircraft manufacturing.
"I do not think that trade wars can be won by anybody".
"As I described to U.S. Secretary of Commerce Wilbur Ross a year ago, there is not a market in America that can support the demand for ultra-thin aluminum for employers here in Wisconsin and across the country".
"It's troubling to see an American administration revert to some of the failed policies of the past that not just discourages growth, but punishes [it]", Scheer said.
On Friday afternoon local time, he said that the U.S. is losing billions in doing business with other countries, and welcomed a trade war, which he said his country would win.
"Economic strength is military strength", Ross, himself a former steel magnate, said.
On Thursday, Trump announced a plan to place tariffs on steel and aluminum imports from all around the globe, and in the process, freaked out pretty much everyone - from the countries that produce those materials to the companies that buy them.
The steel and aluminum announcement caught many in the administration and on Capitol Hill flat-footed.
In 2017, the USA imported 26.9 million tonnes of steel, with 16 per cent of it coming from Canada.
House Speaker Paul Ryan, a Republican from Wisconsin, said through a spokesman he hoped Trump would consider the effects of a trade war.
Trump's argument is that the United States is "losing" at trade and needs to fight back by punishing foreign steelmakers in China and elsewhere.