"The idea that the Canadian steel that's in military, military vehicles in the United States, the Canadian aluminum that makes your, your fighter jets is somehow now a threat?" he continued.
On Friday morning, the United States announced tariffs on steel and aluminium imports from Canada. "But we're also putting a number of tariffs on consumer goods, finished products for which Canadians have easy alternatives".
Trudeau called the reasoning "frankly insulting and unacceptable".
Dr Fox said Prime Minister Theresa May would be raising the issue at the G7 leaders meeting next week.
The escalating trade conflict comes as months-long talks toward reworking the North American Free Trade Agreement appear to have collapsed.
Mr Ross is seeking deals on agriculture and energy to narrow the yawning United States trade deficit with China, days after Washington threatened to impose additional tariffs on $50bn (£37bn) of Chinese goods.
The spokesperson said the government stands by its analysis that the total value of the goods subject to tariffs is 16.6 billion Canadian dollars.
It's true: Teens are ditching Facebook
Others who found social media harmful cited the potential for online bullying , spreading of false information and addiction. Teens cut use of Facebook for Snapchat , YouTube, and Instagram , according to Pew Research Center.
Morneau has said Ottawa is buying the project from Kinder Morgan Canada in order to help the expansion overcome political risks.
The president targeted China for their taxes on American soybeans and also hit Canada for "barriers" on agriculture products from the U.S.
He downplayed but didn't rule out the possibility that a trade dispute could hurt the booming economy, saying, "It might".
Trump stuck firmly to his position over the weekend, tweeting that the U.S. "can't lose a Trade War" thanks to the size of its trade deficit, which reached $566bn (£424bn) in 2017. "The U.S. has been ripped off by other countries for years on Trade, time to get smart".
Whether they will be, I don't know.
Bombardini, on sabbatical from her job teaching economics at the University of British Columbia, has been watching the USA up close.
"What the United States is going to say is that there is a provision in the [World Trade Organisation] that says, 'Yes, you can break your tariff commitments, you can discriminate if you fall under the terms of this security exception, ' " she says. Prime Minister Trudeau says he thought the countries were close enough to a compromise that he tried to arrange a trip to Washington last week.
The Financial Post led with the fact that the other six members - Canada, France, Germany, Italy, Japan and the United Kingdom - had issued a statement critical of recent USA actions. "In the announcement from the White House, it said very clearly that we still welcome good faith negotiations, and that's why I regard this as more of a family quarrel".