Separately , on May 11 , 2018 , Speaker of the House Paul Ryan set May 17 as a deadline for Congressional action . This deadline was disregarded and the deal with Mexico was not reached until August 27 , 2018 . At this time Canada had not agreed to the presented deal . Because Mexico ’s outgoing president , Enrique Peña Nieto , left office on December 1 , 2018 , and 60 days are required as a review period , the deadline for providing the agreed text was the end of September 30 , 2018 . which was reached precisely on September 30 . Negotiators worked around the clock and completed the agreement less than an hour before midnight of that date on a draft text . The next day on October 1 , 2018 , the USMCA text was published as an agreed-to document . The agreed text of the agreement was signed by leaders of all three countries on November 30 , 2018 as a side event to the 2018 G20 summit in Buenos Aires , Argentina . The English , the Spanish and French versions will be equally authentic
2018 G20 summit
2018 G20 Buenos Aires summit
United States–Mexico–Canada Agreement