Douglas Coe, know among his followers as "The Great Teacher", is a fundamentalist preacher who seeks to spread his particular brand of Evangelical Christianity across the United States at all costs. Coe first works closely with President Rumsfeld, helping the President turn the country into a kleptocracy and remove political dissident. When Coe feels that Rumsfeld is no longer politically useful to him, Coe arranges for his impeachment and arrest. When Rumsfeld's Vice President, Jerimiah Denton, refuses to cooperate with him, Coe launches a coup that kills the members of Congress and most of Washington's political leadership. Under his rule, Coe turns the US into the "Christian States of America", where dissent is outlawed, and non-Evangelical Christians and "degenerates" such as homosexuals or drug addicts are designated for death. In his campaign to bring the rest of the country to heel, Coe has at least a dozen American cities destroyed with nuclear weapons. In order to stop a Cuban invasion of Florida, Coe uses several more nuclear weapons, indifferent to the millions of innocent people killed due to his actions. When the nuclear stockpiles begin to run low, Coe authorizes the use of chemical and biological weapons in his war against the resisting American populace. Believing himself to be the messenger of God, Douglas Coe created one of the most oppressive and violent regimes in American history.
Harsher in Hindsight: In the timeline, the Muslim Brotherhood conquers a large amount of territory in Syria and declares a theocratic Caliphate. This was written in 2012. Come 2014, and the Islamic State, which has carved out a large amount of territory in Iraq and Syria, declared itself a Caliphate simillar to the one in-story.
Magnificent Bastard: Dear Lord, George Corley Wallace. As mentioned above, the story hinges on Wallace hanging on to his paltry nine electoral votes to either force the Democrats and Republicans to make a "corrupt bargain" to get around his roadblock, or fail and cause one of the two hapless running-mates to ascend to the Presidency instead; either way setting the stage for him to make a comeback in '76. He succeeds in both plans, as bi-partisan scheming first allows Spiro Agnew to become President, then, after he proves to be an utter disaster, forces the Congress to awkwardly remove him and replace him with a retired General, ultimately leaving both parties discredited — exactly as planned. Wallace meanwhile quietly makes peace with the Alabama NAACP and slides away from his segregationalist past. (This happened in OTL.) He runs for President again in 1976, becoming the front-runner after baiting Spiro Agnew into attacking him on his handicap, which he parlays into a dramatic speech about feeling the pain of the common man. Wallace ends up winning the Democratic nomination after allying with Ron Dellums, of all people, and chooses the very man who stood against him in the "Stand at the Schoolhouse Door", Nick Katzenbach, as his running mate. As of the last update, he wins. Yes, all of the chaos of the past four years in this story is the old bastard's plan working.
Reached in a big way by the Lesser Mao (Chairman Mao's nephew). After spending several years turning China into what is, effectively, post-Cold WarNorth Korea meets Khmer Rouge-era Cambodia, as well as getting involved in a war in Southeast Asia and turning the PRC into the world's leading exporter of heroin, he officially crosses the line when he suppresses a military rebellion by nuking the rebel-controlled city of Kwangsi, making it the first time nuclear weapons have been used in anger since Nagasaki.
For President Rumsfeld, many people in-universe (and on-board) saw he reached this when he upholds the South African apartheid, quasi-fascist government as an example of freedom. For others, it was when he effectively declares war on the urban poor by promising to end all welfare. Either way, he had all but certainly crossed it when he used massive voter fraud and covert tactics to allow him to win the 1984 election.
As of the July 26 update, the US under Rumsfeld seems to have well and truly crossed the Moral Event Horizon in the invasion of Cuba, with Liberty Legion officers assigned to shoot wounded soldiers to save costs. The American troops in Cuba are no happier with it, shooting the 'Liberty Legion' troops that came with them. Doubles as a Wham Episode.
The Soviet Premier believes Rumsfeld crossed the line with his attempted murder of Richard Nixon.
For state governors, Rumsfeld crossed the line when he attempted to impeach California Governor Pete McCloskey and replace him with his own stooge. When the Supreme Court ruled against him, Rumsfeld had those justices impeached. It prompted other state governments to break away from Washington.
The Christian Values party crosses this when they use nukes against American cities that resist their takeover.
Rescued from the Scrappy Heap: George Wallace, at least to some extent. He remains a flawed man and President but rather spectacularly redeems himself for his pro-segregation past by bringing more black lawmakers into the cabinet than ever before. And he comes back as Governor of Alabama yet again to save the state from Rumsfeld in the 80's.
Spiro Agnew, of all people. For much of the saga, he has acted like a racist, corrupt buffoon. But eventually he finds Rumsfeldia to be insane and joins forces with other governors to issue a nullification pact.
After all the horrible events of the TL, many readers have found themselves finding Richard Nixon of all people to be a pretty good guy in hindsight.