I think its likely when the dust clears from the civil war, the whole Decade of Tears will create a profound moral crisis within the American psyche.
Yes, Rummy was a tyrant whose mad whims drove him to attack his own fellow Republicans. Yes, he exploited an outdated electoral system and rigged elections.
But he wasn't some invincible demon who was unstoppable, as proven by his impeachment: he wouldn't have gotten as far as he did had their not been a desperate upper middle class eager and willing to vote for a man who would supposedly protect their interest.
This was a middle-class that saw little problem with Rummy tearing at the engines of prosperity, backing an outright genocidal regime in South Africa, and turning huge portions of the government into a cash machine for private business. This was a group of voters who didn't find it problematic that their history was blatantly being rewritten, the environment was being heavily contaminated, their constitution being torn apart under the banner of "true freedom", their civil liberties were being shredded.
Or, even if they were troubled by those things, they still considered Rummy to be at least better then the nutty Libertarians and "welfare bums" who want money for nothing.
And let's not forget that more then a few Democrats, driven by opportunism, eagerly sided with this process as well, destroying the legacy of their own party, and turning their backs on their own principles.
As they say, a people gets the leader they deserve.
While OTL Watergate made Americans question the roles of their leaders, the whole Decade of Tears will many Americans to question what they once held dear. The fact that a good number of Americans considered Rummy a better choice then the likes of Pete McCloskey, or even Ron Dellums will transform what Americans value.