content: The best hope is that the internal revolution is quick and decisive in favor of the Whites.  Traitors are eliminated and power is gained by the 150-180million Whites. This includes all military forces and weaponry.  China would have a very hard time getting to mainland US by crossing the waters.  They could go through Alaska or Canada, but there is still some logistics needed to get the necessary millions of soldiers onto US soil. Of course, this depends on a "non-nuclear" war scenario.