Under NAFTA, which also includes Canada, any of the three countries can exit from the agreement after giving six months' notice. "We do not support its cancellation," he said of NAFTA, although he added that the agreement does need to be reviewed and updated. Although Trump has railed against NAFTA, the evidence of its economic effect has been more mixed. But it is difficult to say precisely how many domestic factories and jobs were lost due to NAFTA. American trade with Mexico was growing even before the agreement.
Source: Los Angeles Times January 26, 2017 23:16 UTC