Enrique Peña Nieto in the context of "United States–Mexico–Canada Agreement"

The Agreement between the United States of America, the United Mexican States, and Canada (USMCA) is a free trade agreement among the United States, Mexico, and Canada, in effect from July 1, 2020. It replaced the North American Free Trade Agreement (NAFTA) implemented in 1994. Further, it is sometimes characterized as "NAFTA 2.0", or "New NAFTA", since it largely maintains or updates the provisions of its predecessor. The region including Canada, Mexico, and the United States is one of the world's largest free trade zones, with a population of more than 510 million people and an economy of $30.997  trillion in nominal GDP – nearly 30 percent of the global economy, and the largest of any trade bloc in the world.

All sides came to a formal agreement on 1 October 2018, and U.S. president Donald Trump proposed USMCA during the G20 Summit the following month, where he signed it, Mexican president Enrique Peña Nieto, and Canadian prime minister Justin Trudeau. A revised version reflecting additional consultations was signed on December 10, 2019. It was ratified by all three countries, with Canada being the last to ratify on March 13, 2020. Following notification by all three governments that the provisions were ready for domestic implementation, the agreement came into effect on 1 July 2020.

Mario José Molina-Pasquel Henríquez (19 March 1943 – 7 October 2020) was a Mexican physical chemist. He played a pivotal role in the discovery of the Antarctic ozone hole, and was a co-recipient of the 1995 Nobel Prize in Chemistry for his role in discovering the threat to the Earth's ozone layer from chlorofluorocarbon (CFC) gases. He was the first Mexican-born scientist to receive a Nobel Prize in Chemistry and the third Mexican-born person to receive a Nobel prize.

In his career, Molina held research and teaching positions at University of California, Irvine, California Institute of Technology, Massachusetts Institute of Technology, University of California, San Diego, and the Center for Atmospheric Sciences at the Scripps Institution of Oceanography. Molina was also Director of the Mario Molina Center for Energy and Environment in Mexico City. Molina was a climate policy advisor to the President of Mexico, Enrique Peña Nieto.