"The problem was that in conveying that message, I used language that was inappropriate and basically lost the power of that message", Mr. Navarro told the Wall Street Journal's CFO Network meeting, according to a recap of the session from the WSJ.
"I have made it very clear to the president that it is not something we relish doing, but it is something that we absolutely will do, because Canadians, we're polite, we're reasonable, but we also will not be pushed around", Trudeau said.
Trump's chief trade adviser, Peter Navarro, acknowledged an error in asserting "there's a special place in hell" for Trudeau, whom he accused Sunday of bad faith diplomacy and stabbing Trump in the back after he departed early from the G7 summit in Quebec. Trudeau had criticized Trump for the new tariffs and vowed that Canadians "will not be pushed around".
Trump is now feuding with Trudeau and other close allies of the United States over trade just one day after leaving the G7 Summit in Canada where he met with world leaders. Trump tweeted on Saturday. "We just shook hands!'" Trump said Tuesday.
Navarro, a supporter of tariffs to help reduce the U.S. trade deficit and a longtime critic of China, turned his anger at Canada over the weekend as a Group of Seven meeting hosted by Trudeau ended in disarray and trade threats.
On Sunday morning Navarro and Trump's director of the National Economic Council, Larry Kudlow, piled on the criticisms. And I say, push him around?
"We finished the (G7) meeting and really everybody was happy".
On Tuesday, Trump barely let up, telling reporters in Singapore, after his summit with North Korea's Kim Jong Un, that while the G7 summit was "good" Trudeau's critical comments would cost Canada "a lot of money".
"Trump's disruptiveness is one thing, but his treatment of Canada and other US allies is unprecedented", said Roland Paris, a University of Ottawa professor and former Trudeau foreign policy adviser.
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.
Trump said it "didn't look friendly" but it was "very friendly". He learned. You can't do that. Trump's steel tariffs and threats to tax auto imports, among other protectionist policies, have strained relations with America's closest allies, including Canada, with whom the administration has been struggling to re-negotiate NAFTA. He also met privately with dairy farmers in his office.
And he confirmed that Canada would press ahead with dollar-for-dollar retaliatory tariffs on July 1 as previously announced.
"From the beginning we have said that our approach would be to hope for the best, to work for the best possible outcome but always be prepared for the worst, to have a Plan B, C, D, E and F - and maybe to the end of the alphabet".
"I think I've helped them".