AMD does make chips in the US via their spun off Global Foundries, and so does Intel. AMD switched some production to TSMC because they had much better defect rates at 7nm. You can buy US made AMD today if you want it just won't be the latest GPU's.
> AMD switched some production to TSMC because they had much better defect rates at 7nm.
GloFo outright canceled their 7nm and smaller processes, back in 2018. All of AMD's leading-edge processors are now using TSMC 7nm, though the server and most desktop processors also incorporate a 12nm IO die. The days of AMD using GloFo are numbered.
Really, though, at this point it's easier to list what leading-edge chips aren't using TSMC: Intel's CPUs and FPGAs. All the other latest-and-greatest CPUs, GPUs, FPGAs and smartphone SoCs are made at TSMC. There's more diversity for memory manufacturing, and logic that doesn't need to be on a leading-edge process (eg. low-end smartphone SoCs, motherboard chipsets, SSD controllers).
