submitting briefs, oral arguments, conference, and write opinions to explain majority decision
The answer is creating a law ex post facto.
To secede is to withdraw, as the South did, from the Union. The Democratic Party split in 1860 over disagreements over slavery and popular sovereignty. Lincoln defeated three other candidates to win the election of 1860. Many Southerners had warned that Lincoln's election would lead to secession of the Southern states.
