Like, giving independence to California and Cascadia for example. Because if you’re a communist party and believe the US is a settler state, it’s logical to strive to break up that state. But I’m not Statesian so I don’t know in what way this is discussed in the parties.
If a party states balkanisation as an explicit goal they are pretty much eliminating any chance they have of gaining any traction. Secessionism seems more viable but only slightly.