"In conveying that message, I used language that was inappropriate and basically lost the power of that message", CNN quoted Navarro as saying on Tuesday at the Wall Street Journal's annual CFO Network conference.
Donald Trump's spectacular bust-up with America's closest allies at the G7 raises the already high political stakes for Tuesday's summit with Kim Jong Un, and highlights the dangers of the United States leader's self-serving diplomacy.
Mr Trump's comments after a summit in Singapore with North Korean leader Kim Jong Un were his most extensive on the matter since he tweeted that Mr Trudeau was "very dishonest and weak" and raised the prospect of tariffs against auto imports, a move that would imperil the Canadian economy.
The G7 summit came after the Trump administration chose to impose tariffs on steel and aluminum imports from the European Union (EU), Canada and Mexico, which had drawn strong opposition from the domestic business community and USA major trading partners. -Canada trade dispute following the weekend's G7 summit.
Trump's economic adviser Larry Kudlow had also accused Trudeau of having "stabbed us in the back" and engaging in a "sophomoric, political stunt for domestic consumption". Dems lack heir apparent this time MORE and Canadian Prime Minister Justin Trudeau, asking: "Trudeau or Trump?" "Kim must not see American weakness".
Trump pummels G-7 democratic allies but loves autocrats
Following Trump's departure from the G7 summit, Trudeau said Saturday at a press conference that US steel and aluminum tariffs against Canada on national security grounds were "kind of insulting" and that Canada "will not be pushed around".
It escalated when Prime Minister Trudeau stood up to Trump's bully tactics and refuted Trump's unfounded claims of unfair trading practices between the two countries. "You can't do that".
Bruce Heyman, who was US ambassador to Canada during President Barack Obama's administration, called on Navarro in a tweet to formally apologize to Trudeau for his "insulting and inappropriate remarks".
Heyman waged a campaign on Twitter to persuade Navarro to apologize by saying he was contacting US politicians about his remarks.