I think japan is a great example of my point. Look at the massive growth it had during its protectionist time period. Their auto industry was grown behind a massive wall of tariffs, and when japan finally liberalized their trade, japan was a very competitive industry leader. All the while other sectors of japan were growing rapidly as well. Look at what this foreign competition has done to the US auto industry. It went into decline as we lost some of our competitive advantage. Many American workers lost high productivity manufacturing jobs and gained lower wage service jobs.