It may look so from the West. Big name equipment like steppers, and deposition tools come from the West, but a lion share of everything else is a product of the local supply chain.
Without that, setting up new fabs elsewhere is not possible.
Because some globally single source consumable are too locally produced, you cannot talk of even resuming production at existing fabs.
Fellows funded by some suspicious foundations in the West arguing for "we will coax TSMC to build a fab in America, and then we can betray them" are pushing an exact line as Beijing.
First, they are not engineers, and have no idea how the industry functions. Fabs will stall within weeks after running out of consumables from Taiwan.
Second, America cannot "weather the storm." There will be absolutely no arrangement possible how the US can regain access to semi once this is over in any way.