Also see this, by Charles Chiniquy who was close to Lincoln since prior to his presidency:
“After Lincoln became President, Chiniquy recounts how he and his former lawyer spoke of the potential dangers to the President by way of assassination. It was not merely a personal matter but one that embodied a grave threat to these United States and all its citizens. Why? By declaring their liberty to live free under a republican form of government, as outlined in its original Constitution, the citizens of this country were living contrary to the teachings of the Church of Rome. Therefore, the Church’s secret societies were (and are) taking steps to remedy this matter as directed by their leaders.”
https://hisworkmanship.net/a-warning-to-america-from-a-man-abraham-lincoln-defended-in-a-court-law/
“1st. The most sacred principle of the United States Constitution is the equality of every citizen before the law. But the fundamental principle of the Church of Rome is the denial of that equality.”
https://hisworkmanship.net/a-warning-to-america-from-a-man-abraham-lincoln-defended-in-a-court-law/