On June 19, Mexico became the first nation to ratify the United States-Mexico-Canada Agreement (USMCA) in a sweeping Senate vote. The agreement was signed by the three countries in 2018 to replace the 25-year-old North American Free Trade Agreement (NAFTA).

The free trade agreement, when ratified by the U.S. and Canada, will update the terms of trade to regulate sectors such as ecommerce that did not exist when NAFTA was negotiated in 1994. The USMCA incorporates a sunset clause that says the terms of agreement will expire in 16 years unless re-negotiated.

Mexican President Andres Manuel Lopez Obrador made clear in recent months that he anticipated a swift ratification. There has been little parliamentary opposition by Mexican legislators, who seem eager safeguard market access to U.S., and the trade deal was approved with overwhelming cross-party support in the Senate. The U.S. is Mexico’s top export destination, sending over 80% of goods to the U.S. each year.

In response to the ratification, Lopez Obrador also said that he wants to avoid conflict with U.S. President Donald Trump, but noted that the recent tariff dispute showed Mexico needed to become more economically self-sufficient.

Canadian legislators are pressing ahead to ratify the deal in 2019. The U.S., however, is hitting roadblocks in the ratification process. Democratic lawmakers have threatened to block the process, citing workers’ rights and environmental regulations. Some analysts forecast a 2020 ratification for the U.S.

To learn more about Mexico’s ratification of the USMCA, check out Reuters or CNBC coverage.