mexico city mexican economy minister ildefonso guajardo say tuesday expect u.s. president donald trump administration tell congress early next week plan renegotiate north american free trade agreement move would produce talk late august guajardo say would information meet u.s. trade representative robert lighthizer vietnam thursday part asia-pacific economic cooperation meet 2016 u.s. election campaign trump vow scrap 1994 deal unite state canada mexico adjust benefit u.s. interest probably notification send congress u.s. executive time early next week guajardo tell mexican media tuesday day meet washington u.s. commerce secretary wilbur ross u.s. officials washington ross decline predict exact time notification say consultations congress need first meet tuesday u.s. senators say ross new u.s. trade representative robert lighthizer express preference keep current trilateral format nafta talk guajardo also say dispute sugar unite state could resolve within two weeks june deadline break impasse u.s. sugar industry press u.s. commerce department late last year withdraw 2014 agreement set price quotas u.s. import mexican sugar unless deal could renegotiate u.s. sugar lobby want mexico export less refine sugar become embolden since trump take office u.s. commerce department spokesman say ross guajardo discuss possible solutions continue work toward negotiate settlement deal however would need agreement u.s. sugar producers bring anti-dumping case mexican competitors monday mexico sugar chamber say deal reach talk monday resolve dispute mexico expect nafta talk late august economy minister