What was Abraham Lincolns position during Dred Scott decision?

Abraham Lincoln opposed the Dred Scott decision, which ruled that African Americans could not be considered citizens and that Congress had no authority to prohibit slavery in the territories. He believed the ruling was fundamentally wrong and a step backward for the country. Lincoln argued that the decision contradicted the principles of the Declaration of Independence and threatened the nation's unity by legitimizing the expansion of slavery. His opposition contributed to the growing tensions between the North and South leading up to the Civil War.