What was the impact of the Dred Scott decision on the Missouri Compromise?

The Dred Scott decision had a significant impact on the Missouri Compromise by ruling it unconstitutional. In the 1857 Supreme Court case, the justices concluded that Congress did not have the authority to prohibit slavery in the territories, which effectively invalidated the provisions set forth by the Missouri Compromise that had attempted to maintain a balance between slave and free states. This ruling not only negated the compromise itself but also intensified the national division over the issue of slavery, contributing to the tensions leading up to the Civil War.