It is a few generations behind: Blackwell is still on N4, which is an N5 variant. Meanwhile TSMC has been shipping N3 family processes in large volume products (Apple) for more than 2 years already, and is starting to ramp the next major node family (N2) for Apple et al. next year.
NVIDIA has often lagged on process, since they drive such large dies, but having the first major project demo wafer on N4 now is literally 2 generations behind Taiwan.
Forgot about AMD's brief GPU flirtation with glofo. ATI used TSMC. I think it was only Polaris that ever shipped anything from NY. That's admittedly a couple of legendary value cards though.
I never thought this would happen, or that if it did, we'd be a few generations behind.
Now let's onshore or friendshore everything else we need! Rare earths, mid-tier processors, chemical precursors, pharmaceuticals, steel, robotics/mechatronics, solar, drones, ...
Why even stop there? Kill the Jones Act, get back to building naval drones and ships of all kinds, ...