Perhaps the USA is not the primary intended target. We're one of their best customers [choke].
Sure we can deter them and they can deter us, like we did with the USSR during the cold war. I don't believe they are fool enough to try anything. Mutual assured destruction and containment. Nerve-wracking, but we can deal with it.
A more likely scenario is quietly blackmailing Taiwan without proclaiming to the world what they are doing.
Another possibility is is deterrance and containment of Russia by China, also quietly.
Furthermore what about India? They could annihilate India and India could not annihilate them back. Likewise Pakistan.