(Christopher also cracked the Payseur secret in this same book.)
Christopher also makes a convincing circumstantial (as is expected over century and a half later) case that Mary Todd did not take the news of Lincoln's illegitimate daughters well, and using her single shot, lady's pearl handled pistol shot Lincoln in the head as she was seated next to him, right as the stunt double for John Wilkes Booth arrived to kidnap Lincoln. Lincoln's greenback did not make his banking relatives happy, but they did not plan to kill him; they planned to humiliate him and leave him on the street. This also explains why Booth jumped off the balcony; he thought he was going to be made a scapegoat. He didn't know that Mary Todd went rogue. This also explains why congress never gave Mary Todd a widow's pension.
(Continued)

Lincoln destroyed the republic by waging war on the southern states, in violation of the law, and he was ineligible for the presidency as a lawyer because the original 13th amendment had been ratified about the same time the 15th president, Buchanan passed the BAR.
In my view, there are plenty of reasons for ObaMao to like to compare himself to Lincoln. His past was murky and fabricated. He was an eloquent hypocrite. He was a traitor. He used his office for his financial benefit. He behaved as though he was not constrained by the Constitution. His war on the southern states opened the door for the Act of 1871 corporation to fill the void left by the secession of the states.
For his treason, betrayal of his countrymen, their deaths and the death of the republic, the cabal made a memorial to Lincoln and put him on Mt. Rushmore next to another traitor, Teddy Roosevelt, who singlehandedly helped Woodrow Wilson win the election over the sure to be re-elected Taft.