This ^
The answer is open boarders and the elimination of our foreign intervention. All the reasons for hard boarders are antiquated and are used to divide the working class. You have more in common with any working class person from anywhere than any wealthy individual.
Also, production doesn't happen over night. Even if companies wanted to move back to the US, it would be years before anything will be made. We don't have the infrastructure due to 80 years of negligence