There was no specific industry set, people in general will opt for a cheaper alternative all things being equal. That is provided there is no huge gap in quality of the two items. The US needs manufacturing jobs, our service based economy will fail even more in the future.
If you read the rest of this thread it is laid out pretty clear how to stop cheap imports into the US, the same way those countries stop our products.
Unions are a parasite on the workplace. Have you ever had to deal with a union? I had a union leader threaten me if I pressed an issue against a union member in the workplace. Even though the union work was in the wrong, incompetent, and general useless. The location could not get rid of him because of the union and he continued to make it difficult for me to do my job.
Wipe out corporations? What are you a professor or someone else that does not live in the real world? I hate to tell you this is not the Oregon Trail, we don’t live in the olden days, and corporations are going to get bigger. If you don’t like that maybe you should move to an old territory of Soviet Russia, I think it would make everybody happy…