Is it true that a group of republicans plotted to secede from the union?

Yes, there have been instances in U.S. history where factions within the Republican Party have discussed or threatened secession, particularly during times of political tension. Most notably, the Civil War era saw Southern states, many with Republican support, secede from the Union. However, in contemporary politics, while some individuals may express secessionist sentiments, it does not represent a formal or widespread movement within the party. Secession remains largely viewed as illegal and unconstitutional.