I don't consider cars simple assembly, that has obvious value add when compared to a pile of parts. Fiber optic assemblies are expensive to buy but trivial to

I don't consider cars simple assembly, that has obvious value add when compared to a pile of parts. Fiber optic assemblies are expensive to buy but trivial to build from the inexpensive imported parts. Forcing purchasers of those assembled parts to buy onshore should count as an effective negative manufacturing GDP because it could have been purchased offshore fully assembled for cheaper. Perhaps there are good national security reasons for requiring onshore assembly of telecoms equipment but mixing it with economics statements is goosing.