Why did Chief Justice Taney say that the Missouri compromise was institutional?

Chief Justice Roger B. Taney described the Missouri Compromise as institutional because he believed it represented a formal and systemic approach to addressing the contentious issue of slavery in the United States. He argued that the compromise attempted to create a legal framework for the expansion of slavery into new territories, which he viewed as fundamentally flawed and unconstitutional. Taney believed that such institutional measures only served to entrench division and conflict rather than resolve the underlying moral and political disputes over slavery. Ultimately, his views were reflected in the Dred Scott decision, which declared the compromise unconstitutional.