I think both decolonization and socialist revolution don't make sense unless you assume a degree of Balkanization of the US with the US's geopolitical rivals supporting the separatist republics. With Balkanization, there will be pieces that are slanted towards being whiter than average and pieces that are slanted towards being less white than average. It's the less-white-than-average pieces that have potential to be socialist and where decolonization could actually take place. The flip side is that the whiter-than-average pieces will be irredeemably Christofascist. A lot of it would boil down to how the less-white-than-average pieces can defend themselves from fascist separatists and the US rump state and whether they can get the majority of support from the US's geopolitical rivals.