The capacity for Asian chip fab houses to secretly insert backdoor circuitry post tape-out is a potential vulnerability that, at least, makes this bear uneasy. Imagine if all Intel, AMD, Nvidia, Qualcomm etc. CPUs contain a little gift of a made-in-China logic block. I have to hope someone in our intelligence aparatus is taking samples off the assembly lines and is slapping the product under an electron scanning microscope, searching layer by layer for anything not on the blueprint.