Canada argues that it still allows a higher ratio of sold milk to be imported from overseas than the US does and that there is not necessarily a causal relationship between the USA industry crisis and tariffs.
But Trudeau still said a few things that didn't go down well inside Air Force One. "We have been, our trade is a disaster, our trade deals".
Hours after Trump withdrew his support for the joint statement and attacked Trudeau, White House economic advisor Larry Kudlow and trade adviser Peter Navarro drove the message home on Sunday morning news shows in an extraordinary assault on a close USA ally and neighbor.
Trump adviser Peter Navarro, meanwhile, said Tuesday he made a mistake when he said "there's a special place in hell" for Trudeau.
Trump had earlier called Trudeau's statement as "dishonest and weak".
Kudlow was particularly offended that Trudeau would say this ahead of Trump's North Korean summit.More news: How Meghan Markle dared to break protocol at Queen's birthday parade
He said Mr Trudeau was "very dishonest and weak" and "acts hurt when called out".
Trudeau had told reporters that Trump's decision to invoke national security to justify United States tariffs on steel and aluminum imports was "kind of insulting" to Canadian veterans who had stood by their U.S. allies in conflicts dating back to World War I.
Kudlow said the president won't "let a Canadian prime minister push him around".
A Trudeau spokesman, Cameron Ahmad, said on Saturday night that Mr Trudeau "said nothing he hasn't said before - both in public and in private conversations" with Mr Trump.
President Donald Trump added more fuel to the fight with Canadian Prime Minister Justin Trudeau. Trump ended that temporary relief this month, seeking to pressure the other countries to cut new trade agreements with the U.S. Japan was never granted a waiver, despite Prime Mininster Shinzo Abe's pleas.
"That's what matters", he wrote.
Reneging on the commitments agreed in the communique showed "incoherence and inconsistency", it said in a statement.More news: ‘Trash Panda’ scaled a Minnesota skyscraper, and everyone loved it
Mr Trump also responded by announcing that he was backing out of a joint communiqué on trade between the U.S. and its main allies.
Officials from European delegations quickly leaked copies of the joint statement, and it was published online moments before Trump tweeted. Thomas Wright, a senior fellow at the Brookings Institution, told reporters that for Trump's first 500 days, "these countries generally were bent over backwards not to criticize President Trump. We would hope that the United States would similarly honour the commitments that they have made".
Mr Trump has infuriated the European Union, Canada and Mexico by imposing tariffs on steel and aluminium imports.
Trump again presented the U.S. as the victim of unfair trade deals during the interview with ABC on Tuesday. The European Union also attends. "They know it", he insisted in his departing news conference. "You know, it's like the gig is up".
Speaking to Fox News, Kudlow said: "He is very seriously contemplating kind of a shift in the NAFTA negotiations".
Threatening such a change could be another effort to advance the negotiations in order to secure a congressional vote on a revised deal by the end of the year, according to global law firm Sandler, Travis & Rosenberg.More news: Wetherspoons Ditches French Champagne in Latest Brexit Sulk