Question: Who was the president that signed the legislation that gave the freedom to the court to rule the way it ruled in the Dred Scott Decision?
Sentence (from "Dred Scott"): Dred Scott (c. 1799 – September 17, 1858) was an enslaved African American man in the United States who unsuccessfully sued for his freedom and that of his wife and their two daughters in the "Dred Scott v. Sandford" case of 1857, popularly known as the "Dred Scott Decision".
Relevant evidence: Yes