A divisive summit in Canada at the weekend ended with U.S. President Donald Trump firing off a volley of tweets, venting anger against North Atlantic Treaty Organisation allies, the European Union and Canadian Prime Minister Justin Trudeau.
Before the apology, some US lawmakers on Tuesday questioned the strong language the White House and Trump have used toward Canada in contrast to the praise he gave North Korea at Tuesday's summit in Singapore.
Since Trump's election, Trudeau's government has poured energy and time into building relationships with the White House, with Congress and throughout the USA private sector, hoping to rally enough support to keep Trump from upending the continental trading system.
Navarro's comments Sunday were part of the White House's continued criticism of Trudeau after the prime minister announced that Canada would impose retaliatory measures to answer Trump's tariffs and warned that Canada would not be "pushed around".
The purely symbolic vote of solidarity came a day after White House trade adviser Peter Navarro said: "There is a special place in hell" for Trudeau for his "bad faith diplomacy" with Trump, as a dispute over trade escalated. Addressing reporters in Singapore ahead of Trump's summit Tuesday with North Korean leader Kim Jong Un, Pompeo said he was "unconcerned" that Trump's treatment of Canada - a close ally - boded poorly for his ability to forge peace with a longtime USA adversary.
But today he apologized for using language that counteracted his goal of sending a signal of strength.
"I used language that was inappropriate and basically lost the power of that message", he said.
The president said that Canada, Mexico and the European Union have taken advantage of an worldwide trading system, benefiting from low USA tariffs while imposing high trade barriers of their own.
"We get on the plane and then this guy Trudeau starts blasting us", Kudlow told CNN.More news: Revealed images of the Pixel 3 XL leave nothing to the imagination
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"POTUS is not going to let a Canadian prime minister push him around ... on the eve of this", Kudlow said.
It started with the tariffs on steel and aluminum that were imposed on Canada and other G7 nations by Donald Trump.
Foreign Affairs Minister Chrystia Freeland, who will be in Washington on Wednesday and Thursday, is hoping to meet with US trade czar Robert Lighthizer to resume discussions on modernizing the North American Free Trade Agreement. The president's chief economic advisor told Jake Tapper on Sunday that Trudeau "stabbed us in the back" with his post-G7 remarks, calling it a "sophomoric play".
Trump also continued to denounce Canada's system of supply management to protect the domestic dairy, egg and poultry industry, which levels tariffs of up to 300 per cent on American imports of those products.
Mr Trump's comments were in response to a reporter's question about the status of his relationship with Mr Trudeau.
"I actually like Justin", Trump said.
"Sorry, we can not let our friends, or enemies, take advantage of us on trade any more".