In fact, in a paper he wrote yesterday, he basically explains that American soil is no longer a sanctuary, and that the Chinese now have the possibility of hitting American soil with missile strikes.
As he explains, in the past, China's ability to strike the USA was extremely limited, as it could only attack through cyber attacks or strategic nuclear strikes.
But today and in the future, with the new weapons that China is developing, it has and will have the possibility of hitting American soil with conventional weapons.
Elbridge explains that if such an attack were to occur, the Chinese would probably target strategic locations on American soil.
Although, as he explains, it doesn't say that China will attack American soil, but that they should be prepared for the possibility.
And of course the Americans would have means of retaliation, but that wasn't the subject of his analysis.