Fauntroy's test results were rigged.There was a news report on how mistakes were made in DNA tests. What if those WEREN'T mistakes? What if someone had swapped Fauntroy's test results to get an outcome they wanted? All the major parties had motivation:
The building that houses the Lincoln Memorial in our timeline houses the Davis Memorial in the CSA timeline.Seems a logical leap.
The slave that plays Cleofus in That's My Boy! is mentally retarded.The Hollywood producers would want a slave that's pliable and easily manipulated, and-above all-won't realize that he isn't really free, or won't question it. (I highly doubt they'd actually FREE a slave just for a TV show.)
Fauntroy the First's wife was infertile.If what Horace said was true, why go to such risks to take in the light skinned slave children and pass them as part of the family? Because his legal wife couldn't have children. So they chose one of their slaves-Horace's great-great grandmother-and used her more or less as a broodmare to give Fauntroy children that he could pass as white and legitimate. (It's very likely that Horace's ancestress was herself lightskinned, and possibly the result of a union between a slave and a white man, either by a previous slave owner that was from before 'the beginning', or from a friend of Fauntroy's ancestor if he let his friends have his slaves for fun.)
Lindsay was a spy.As pointed out elsewhere, if Fauntroy had won the election, he would have caused a devastating war between the US and Canada, and remember, the CSA DOES have the bomb. Either Britain, worried about what the impact of the war would be on their relations with Canada, sent one of their spies to uncover something to discredit Fauntroy with, or Canada enlisted a British-born spy to do the same. Either way, the documentary was their guise to get in the country.
The Soviet Union is the world's dominant power.Without U.S. interference in Europe, the Soviets "liberated" the whole continent. France, Spain, Italy, Portugal, and the rest of western Europe are Soviet satellites. The blatant racism of the C.S.A. makes communism look good, so the U.K. and Canada are Soviet allies and the Summit Nations is headquartered in Moscow. In real life, Soviet propaganda tried to win over Third World countries by portraying the U.S. as racist. In this world, the Soviets used the same strategy to greater effect. Africa and Asia are mostly, if not entirely, composed of Soviet satellites. Without the Cold War to motivate them, glasnost and perestroika never happened and there was no fall of communism.
Fauntroy knew he was passing.Otherwise, why would he refuse to take a DNA test until he was forced to; if he knew he was purely white then he'd have nothing to hide, now would he?
If the Fauntroys have black ancestry, then they are in for sheer hell.Thanks to the one drop rule, every single Fauntroy that can trace his/her ancestry to John Ambrose Fauntroy I is going to be promptly sold into slavery. And imagine if they got sold to a former friend who'd be willing to mistreat them or have to interact with their former slaves, who might be willing to taunt them. I'll bet Fauntroy V won't be the only one willing to commit suicide. The women that married into the family won't fare much better either, thanks to the sexist culture they'd be seen as tainted at best. Best they could hold out for is ostracism, worst is imprisonment or perhaps slavery as well. The men that married into the family? Honestly they'd come out on top in this matter, nothing would really happen to them. Wouldn't shock me if they were sold or given their 'wife' and children as slaves. MAYBE someone would be willing to smuggle a few into Canada but given how quickly the public turned on Fauntroy V when they just thought he was black they'd probably not risk it.