To make conversation productive, please define "national security" in this case.

For example, if China can't install its hardware in Pentagon, why is it a threat to national security.

On the other hand, if you say, Intel will be in trouble because of these chips, then I would say, so what? Wasn't this a dream of MBAs, educated by the top US schools, to outsource everything in business to cheaper service providers (e.g. manufacturing to China, software development to India and etc,.)

Where is the threat and what is the threat?

"To make conversation productive, please explain how outsourcing your strategic industry and know-how to geopolitical rivals and enemies is a threat."

You have a funny definition of "productive".