In the Scott v. Sandford case, why was the argument of Sandford’s widow based on the Fifth Amendment?

The Fifth Amendment protects people from being deprived of property without due process of law. Sandford’s widow argued that Dred Scott was her late husband’s property, so she claimed that recognizing Scott’s freedom would take that property away. The correct choice is that she believed Scott was her late husband’s property.

AI-written and checked against the verified answer.