President Donald Trump is crediting his protectionist trade policies for bringing about a revised trade agreement with Mexico and Canada.

Trump spoke in the Rose Garden on Monday to promote the new North American free trade agreement, which he calls the USMCA. Trump says, "Without tariffs we wouldn't be talking about a deal."

Trump calls critics of his tariff policies, including some lawmakers in Congress, "babies." He adds it is those moves that have brought American trading partners to the negotiating table.

Trump says tariffs are pushing the European Union, Japan and South Korea to seek out new trade agreements with the U.S.

"I'm thrilled to speak to the American people to share truly historic news for our nation and indeed for the world," President Trump said after taking the stage. 

"It's my great honor to announce that we have successfully completed negotiations on a brand new deal to terminate and replace NAFTA ..." he continued. 

Trump reiterated something he has said before, that "NAFTA was perhaps the worst trade deal ever made." 

The agreement between the United States, Mexico and Canada came together Sunday, just before a midnight deadline imposed by the U.S.

The new deal will be called the United States-Mexico-Canada Agreement, or USMCA. It replaces the 24-year-old North American Free Trade Agreement, which Trump called a job-killing disaster.

The agreement gives U.S. farmers greater access to the Canadian dairy market. But it keeps a NAFTA dispute-resolution process that the U.S. wanted to jettison and offers Canada protection if Trump goes ahead with plans to impose tariffs on cars, trucks and auto parts imported into the United States.

"I plan to sign the agreement by the end of November, I then will submitted for approval to Congress, where, in theory there should be no trouble," he says. "But anything you submit to Congress is trouble no matter what." 

The new trade agreement will need to be ratified by Congress — something that could be in jeopardy if Democrats take the House come November. 

During the press conference, Trump mentioned his talks with Canadian Prime Minister Justin Trudeau.

"A lot of stories came out about Justin [Trudeau] and I, about having difficulty together... but I tell you, it has turned out to be a very very good deal for both, and a very very good deal for all three [U.S., Canada and Mexico]."

U.S. Secretary of Agriculture Sonny Perdue issued this statement: 

“The great news of a new USMCA deal is important for our economy as a whole, including the agricultural sector, which counts Canada and Mexico in our top three trading partners. I have long said that I believe our country is located in the best neighborhood on Earth – North America – with valuable allies to our north and south.  We have secured greater access to these vital markets and will maintain and improve the highly productive integrated agricultural relationship we have as nations. Notably, as one of the President’s top goals, this deal eliminates Canada’s unfair ‘Class 7’ milk pricing scheme, cracks open additional access to U.S. dairy into Canada, and imposes new disciplines on Canada’s supply management system. The agreement also preserves and expands critical access for U.S. poultry and egg producers and addresses Canada’s discriminatory wheat grading process to help U.S. wheat growers along the border become more competitive. 

“As we celebrate this breakthrough, it is worth noting that there were many detractors who said it couldn’t be done. But this is further proof that President Trump’s trade negotiation strategy is working. A renewed USMCA, a new KORUS agreement, and the continued progress with Japan, can lead to further deals with other trading partners like the European Union and China. The dominoes are falling and it is good news for U.S. farmers. I thank President Trump and our U.S. Trade Representative, Ambassador Lighthizer for their perseverance, leadership, and hard work.”

(The Associated Press, CBS News contributed to this report.)