Our submission to the Office of the United States Trade Representative was more or less along the lines that I articulated earlier, that the rules of origin in the NAFTA are already very strong and that measures to elevate those requirements are likely to backfire and you could wind up with less North American content. This is a view that has been articulated by most of the large business organizations in the U.S.
On September 25th, 2017. See this statement in context.