I
think the Supreme Court got it wrong in 1857 in
Dred Scott v. Sandford, when it held that an African - American whose ancestors had been brought to the U.S. as slaves could not be a citizen and thus had no legal standing.
None of what Lincoln achieved — the eventual abolition of slavery, the preservation of the Union — would have happened had Lincoln not
thought himself constitutionally authorizedto resist the Supreme Court's decision in
Dred Scott; constitutionally obligated, by his oath, to resist secession; and constitutionally empowered, as commander in chief, to fight the enemy with the full powers at his disposal, which included military force, blockade, suspension of habeas corpus, arrest and detention, seizure of enemy property, and emancipation of Southern slaves.