Mr Trump added: "Fair Trade is now to be called Fool Trade if it is not reciprocal".
The Trump administration imposed aluminum and steel tariffs on the other G-7 members - the United Kingdom, Germany, Italy, France, Canada and Japan - ratcheting up tensions between the US and its allies in the run-up to the summit.
The verbal volleys by Mr Navarro and Mr Trump's top economic adviser, Larry Kudlow, picked up where Mr Trump left off on Saturday evening with a series of tweets from Air Force One en route to Singapore for his nuclear summit on Tuesday with North Korea's Kim Jong Un.
But Sen. Lindsey Graham (R-S.C.) said Sunday on ABC's "This Week", "I'm not so sure John's right about where America is on trade".
The prime minister has kept a low profile since Trump called him "very dishonest and weak" and withdrew support for a Group of Seven communique reached at the summit Trudeau hosted in Quebec on Saturday. We agreed. We compromised on the communique.
Chief trade adviser Peter Navarro said there's "a special place in hell" for Trudeau and anyone else who negotiates in "bad faith" with Trump. Minimum is 17B. Tax Dairy from us at 270%.
By any reasonable measure, the administration's actions were part of a complete scorched-earth approach that was unbalanced and irrational and will only worsen an already frayed relationship with Canada.
We have a feeling this is all far from over... considering Trump still has access to Twitter. That is simply not true.
She acknowledged the European Union would have to respond to the tariffs with its own penalties on U.S. imports but she hoped that it would not lead to wider "tit-for-tat" reprisals. "$800 Billion Trade Deficit ..." Instead, he emphasized the need for other countries to reduce their barriers against the United States, such as Canadian duties on US dairy. The United States has very high tariffs on other products: 350 percent on smoking tobacco, 130 percent on peanuts and 99 percent on prepared groundnuts.
Is trade with Canada ideal? "They do this WAY better than the United States gov't, and I am forever grateful", she tweeted. But Canada would face long odds winning a trade war against a country 10 times its size economically and which takes the majority of its exports.
"At this moment in our history with our USA neighbours, Canadians need to know that all sides of this House stand united as one", Ramsey said before introducing her motion.
Mr Trump earlier warned his counterparts against retaliation after the United States imposed tariffs on steel and aluminium from Europe, Mexico and Canada - saying they would be "making a mistake".
According to a Canada release, they make nearly 100 Billion Dollars in Trade with USA (guess they were bragging and got caught!). Look forward to seeing them tomorrow.
The U.S. president, who so values unquestioned loyalty above all else, has no sense of loyalty or decency of his own. They welcomed stranded USA travelers after the 9/11 attacks; they share the longest undefended border with the US; and they have been our allies in the modern global security apparatus that Trump now wants to blow up. But more importantly, he should apologize to the Canadian public.
Trump took umbrage at those comments.
Hours later, Arizona Republican Sen.
"Justin Trudeau's left eyebrow detached after meeting Trump - so what?"
Welcome to Trump's new GOP, I guess.
President Trump proposed a major shakeup of the world's economic order during a summit in Canada this week, suggesting the world's big economies drop all tariffs and market-distoring subsidies and go to a fully free system of trade.