Or they might move the effected operations overseas. Just saying...
Smart foreign trade deals will take care of products imported from foreign countries. When the same outfits find out it is more profitable to utilize the much cheaper energy cost in USA, the skilled labor force in USA, and the low income tax rates Trump is proposing, and the tariffs they pay to export to USA, they will all come back here.
Why do you think many Japanese outfits manufacture products in USA?