I'm sure that is autoparts, not just bare components. either way the economic principle remains the same.
More NAFTA content - less advantages forr Chinese part.
Again, this was already worked out by Obama and the NAFTA countries in TPP. Throwing that in the trash, then taking it out of the trash, un-crumpling it, taking a couple things from it and ditching the rest isn't creating a whole new deal. It's nominally changing a deal that already exists; and you're not really changing it in a dramatic way that could spur meaningful change. It's just a further protection of the status quo, but it lacks the strength and breadth of TPP. So you might think we screwed over China good, but the reality is that it was a battle China was willing to lose because they gain massively from the US pulling out of a Pacific Trade Pact with China's neighbors and economic partners. So guess who will step into that void? China.