Just to add, all the hype and threats about American nuclear superiority against China or threats of using nukes against China is just psychOps bluff.
The goal is to try to trick China into wasting money on more nukes.
America has already bought and paid for their vast nuclear stockpiles, and are wasting billions every year on security and maintenance, with a potentially astronomical modernisation cost not far down the road.
The only realistic way they can get any value from all that spending is if they can leverage that to bluff China into also wasting more money on more nukes.