I can't help but think of my original CSA dystopia idea.
The part where slavery exists to the modern day.
The discovery that all of humanity emerged in Africa, and this is proven via DNA.
The continued existence of the One Drop Rule, thereby justifying enslavement of anyone of African ancestry: (Read, Anyone)
The ruthless, uncompromised and maximal interpretation of everyone being subject to endless labor without compensation.
The 1984ish level of doublethink of irrelevant racial defenses of a government that simply enslaves whites as "blacks" somehow supporting a racial hierarchy that favors them.
Under a dictatorship that claims to be the true heirs of George Washington and Robert E. Lee, immoral businessmen sell genetically specialized humans from vats, the organs and body parts of "underproductives" and every last item of "cheap labor" on the planet.
The world no longer cares about Slavery. Like Saudi Oil, its too good of a deal to buy and sell such goods to worry about the how. And that such slavery is now much more a means to punish dissidents than simple racism, well, God supports Slavery therefore it's a positive good.
The United States has no interest in reannexing the Confederacy. Locked into three rounds of war between the UK backing Dixie, they've already taken the stuff they want (The Mississippi, Virginia, Appalachia) and gained Canada. Now the CSA is too broke, too insane, and too darn useful to reannex. Canada is more than fair compensation for the loss of the Deep South.
The world continues to buy. The CSA continues to sell. And there is no sign, not the slightest, that this will ever change.