Regardless of this, on May 11, 2018, House of Representatives spokesman Paul Ryan set May 17 as the deadline for congressional action. This deadline was not met and the agreement with Mexico was only concluded on 27 August 2018.  At that time, Canada had not yet approved the submitted agreement. Given that the outgoing President of Mexico, Enrique Peña Nieto, left office on 1 December 2018 and that 60 days of revision are required, the deadline for the submission of the agreed text was 30 September 2018, which was reached precisely on 30 September. Negotiators worked 24 hours a day and reached agreement on a draft text less than an hour before midnight on that date. The following day, October 1, 2018, the USMCA text was released as an agreed document. The agreement provides additional support to IAS-accredited companies that are already recognized for providing testing, inspection, and certification in all three USMCA markets. Canada ratified the agreement in March and the USMCA entered into force on July 1, 2020. Although NAFTA is officially dead, governments and businesses are still adapting to the new rules, especially the new labor rules. The coronavirus could also complicate implementation, as manufacturers will adapt to new guidelines in the midst of a global economic crisis.
In addition, there is a provision stating that the agreement itself must be reviewed every six years by the three nations, with a sunset clause of 16 years. The agreement can be extended by 16 years during the six years of revision.