Which is exactly what you get when foreign engineering and design firms which operate from nations with permissive immigration for STEM talent outsource their low-wage manual labor jobs here for manufacture. What? You want those corporations and their profits to stay here? Forget that, you just walled off the vast international source of talent from domestic high-tech companies which need access to succeed.
Ceteris paribus, the most successful companies are those with the best access to resources, not those with the most limited access to resources. Labor is a resource.
Engineering and design work supports an umbrella of labor: managers, accountants, IT, safety, etc. If your company fails because misguided nationalists blocked access to engineering talent, then all those jobs go with it.
The nations which most successfully exploit the law of comparative advantage by allowing the most free exchange of goods and labor are the wealthiest nations. Walling yourself off because you believe that hoarding jobs and goods in your own country will make it richer is a certain formula for failure and poverty.