Yes, but all US has to do theoritically is hypothetically another "Gulf of Tonkin 2.0"-isque action in or near the SCS/ ESC regions as pretext/guise/pretense to ostensibly fight China and force nations of the world, its allies, vassals and even innocent nuetral bistanders alike etc to pick/choose sides, and since US has the military upperhand, many smaller nations may well go with US again...
And this all plays into the Pompeo propaganda of "CLEAN" nations... an alliance of "CLEAN Nations" as a fortress to defend against the evil/dirty CCP/China, basically trying to get the whole world to dump China software/tech/apps and to wall off China...
So this isn't just American isolationism Qing style, America is isolating itself and ALSO forcing the whole rest of the world to be brought into it, thereby effectively isolating China!