Good thing there are $200B worth of proof already. At what point would you be satisfied, if 100% of semi manufacturing took place in the US and 0 chips were manufactured elsewhere the instant the grants were handed out?
I'd be happy if even half of that money actually went into a fab, and only half was wasted on lawyers, fees, studies, and wherever else free money manages to go rather than to actually building things. The timeline doesn't matter, nor does the fraction of on-shore chips made. You created those measurements out of thin air.
The CHIPS Act was marketed as an "AI cold war", and needing to bring high-tech research and production back to the US. Is is actually doing that by incentivizing companies to build leading-edge fabs in the US, or are companies just using it as free money to expand the production capacity of their trailing-edge processes?
Sure, having locally-sourced trailing-edge chips is still better than getting them from overseas, but it doesn't exactly do anything to reach the intended goals.