Why does TRUMP feel difficult to draw jewelry packaging | industry back to America?

As you knew, the new president of US: Trump wanted to draw back all industries to US. This is his slogan of presidency election. However, jewelry packaging | will make him meet with a refusal. Just examplifying luxury jewelry packaging | as following picture:

From jewelry packaging design | to actualize jewelry packaging design | to jewelry packaging boxes | mass production etc, it covers not only designer, but also jewelry packaging engineering, packaging material selections, printing and post printing craft application, testing, huge of handmade working for R&D and mass production. Just asking every America if they are still willing to do these kinds of working as Chinese workers, i believe none of them is willing to do that longer. Secondly, in America, they have not occupied the whole supply chain for jewelry packaging boxes |. Their designers and engineers have not enough knowledge about mass production and craft. The mass production always locates in China or southeast Asia, they don't have enough time and effort to monitor that. So I believe Trump will feel headache when he encounters with custom jewelry packaging |.