President Trump retracted his endorsement of the final statement from the G7, tweeting afterward he had instructed representatives "not to endorse" it. He blamed Canadian Prime Minister Justin Trudeau's statement afterward that Canada will not be "pushed around" and will go through with retaliatory tariffs.

Based on Justin’s false statements at his news conference, and the fact that Canada is charging massive Tariffs to our U.S. farmers, workers and companies, I have instructed our U.S. Reps not to endorse the Communique as we look at Tariffs on automobiles flooding the U.S. Market! — Donald J. Trump (@realDonaldTrump) June 9, 2018

Trudeau, who has been sparring with Mr. Trump on trade in recent days, announced at the conclusion of the G-7 summit in Canada that the retaliatory tariffs will go into effect July 1. Trudeau said he told Mr. Trump "it would be with regret but it would be with absolute clarity and firmness that we move forward with retaliatory measures on July 1, applying equivalent tariffs to the ones that the Americans have unjustly applied to us."

"Canadians, we're polite, we're reasonable, but we also will not be pushed around," Trudeau said.

Mr. Trump responded directly to this statement in a tweet Saturday evening, writing that Trudeau "acted so meek and mild" and then held the press conference afterward criticizing the U.S.

PM Justin Trudeau of Canada acted so meek and mild during our @G7 meetings only to give a news conference after I left saying that, “US Tariffs were kind of insulting” and he “will not be pushed around.” Very dishonest & weak. Our Tariffs are in response to his of 270% on dairy! — Donald J. Trump (@realDonaldTrump) June 9, 2018

According to Reuters, Trudeau's office released a statement after Mr. Trump's tweets saying "the prime minister said nothing he hasn't said before -- both in public and in private conversations with the president."

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Mr. Trump, who arrived at the summit late, left early Saturday, departing for Singapore for his summit with North Korean leader KimJong Un. Mr. Trump declared tariffs were the most important topic at the G7 summit, blasting ally nations for what he sees as them taking advantage of the U.S. He said other nations have been treating the U.S. like the "piggy back that everybody's robbing." Mr. Trump also warned that retaliating against the U.S. tariffs would be a "mistake," suggesting that the U.S. might just not deal with countries who fail to treat the U.S. at his standards.

Trudeau on Saturday said the U.S., Canada, Britain, France, Germany, Italy and Japan figured out "consensus language" they could all agree to. Trudeau says what the leaders did this weekend was "roll up our sleeves" and figure out language they could agree to on a broad range of issues.

On his way to Singapore Saturday, Mr. Trump tweeted that he thinks fair and reciprocal trade will happen.

Just left the @G7 Summit in beautiful Canada. Great meetings and relationships with the six Country Leaders especially since they know I cannot allow them to apply large Tariffs and strong barriers to... — Donald J. Trump (@realDonaldTrump) June 9, 2018

...U.S.A. Trade. They fully understand where I am coming from. After many decades, fair and reciprocal Trade will happen! — Donald J. Trump (@realDonaldTrump) June 9, 2018

"The United States will not allow other countries to impose massive Tariffs and Trade Barriers on its farmers, workers and companies," Mr. Trump continued. "While sending their product into our country tax free. We have put up with Trade Abuse for many decades — and that is long enough."