Last Friday President Trump was joined by Canadian Prime Minister Justin Trudeau and Mexican President Enrique Pena Nieto to sign the new U.S. Mexico Canada Agreement (USMCA) on the sidelines of the G-20 meeting in Buenos Aires.

Despite the rigorous dispute between America and its closest neighbors, the leaders signed the new agreement in unison.

"This has been a battle, and battles sometimes make great friendships," said Trump in his opening remarks.

The USMCA replaces the North American Free Trade Agreement (NAFTA) which formed a free trade zone between the three countries back in 1994.

The USMCA trade deal began in early October after President Trump hit Mexico and Canada with tariffs on their steel and aluminum products, resulting in retaliatory tariffs and intense negotiations.

During the signing, Trudeau made it clear that there is still work to do calling out the "heavy blow" the tariffs have had on the automotive industry, such as General Motors which announced it will close plants in the U.S. and Canada.

Turning to address Trump, Trudeau said: "And Donald, it's all the more reason why we need to keep working to remove tariffs on steel and aluminum between our countries."

The signing took place on Pena Nieto's final day in office. In his remarks, he said, "The USMCA is the first trade agreement that incorporates elements that address the social impact of international trade; it enables the participation of more sectors in the economy."

In a statement released to the U.S. Department of Agriculture, Secretary of Agriculture Sonny Perdue stressed that the new agreement is "good news" for the American farmer.

“The new USMCA makes important specific changes that are beneficial to our agricultural producers. We have secured greater access to the Mexican and Canadian markets and lowered barriers for many of our products. The deal eliminates Canada’s unfair Class 6 and Class 7 milk pricing schemes, opens 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."

Lawmakers in each country still need to ratify the agreement, which may present a challenge in the U.S., with Democrats taking control of the House in January. Perdue hopes this isn't the case.

“This is good news for American farmers, and we now need Congress to follow suit and enact the necessary implementing legislation."