20th to late september. his net approval rating dropped by double digits with his disapproval rating now above 50% in iowa, michigan, wisconsin, arizona and pennsylvania. by party, the president dropped 25 points among democrats. 18 points among independents and nine points among republicans. the trump administration set to propose changes to the north american free trade agreement that could prove controversial. sources tell cnbc that the goods and duty-free requirements, the proposal is expected to face strong opposition from mexico and canada as well as congress and the american business community. president trump has long been a critic of nafta. and resistance to the new demands could give him justification to pull out of the trade deal altogether. the fourth round of nafta talks begin today in washington. let's turn to the business