peonage, flagrant involuntary servitude, and some instances of race-based violence and discrimination, the Thirteenth Amendment has never been a potent source of rights claims." Black slaves and their descendants United States v. Rhodes (1866), one of the first Thirteenth Amendment cases, tested the constitutionality of provisions in the Civil Rights Act of 1866 that granted blacks redress in the federal courts. Kentucky law prohibited blacks from testifying against whites—an arrangement which compromised the ability of Nancy Talbot ("a citizen of the United States of the African race") to reach justice against a white person accused of robbing her. After Talbot attempted to try the case in federal court, the Kentucky Supreme Court ruled this federal option unconstitutional. Noah Swayne (a Supreme Court justice sitting on the Kentucky Circuit Court) overturned the Kentucky decision, holding that without the material enforcement provided by the Civil Rights Act, slavery would not truly be abolished. With In Re Turner (1867), Chief Justice Salmon P. Chase ordered freedom for Elizabeth Turner, a former slave in Maryland who became indentured to her former master. In Blyew v. United States, (1872) the Supreme Court heard another Civil Rights Act case relating to federal courts in Kentucky. John Blyew and George Kennard were white men visiting the cabin of a black family, the Fosters. Blyew apparently became angry with sixteen-year-old Richard Foster and hit him twice in the head with an ax. Blyew and Kennard killed Richard's parents, Sallie and Jack Foster, and his blind grandmother, Lucy Armstrong. They severely wounded the Fosters' two young daughters. Kentucky courts would not allow the Foster children to testify against Blyew and Kennard. Federal courts, authorized by the Civil Rights Act, found Blyew and Kennard guilty of murder. The Supreme Court ruled that the Foster children did not have standing in federal courts because only living people could take advantage of the Act. In doing so, the Courts effectively ruled that the Thirteenth Amendment did not permit a federal remedy in murder cases. Swayne and Joseph P. Bradley dissented, maintaining that in order to have meaningful effects, the Thirteenth Amendment would have to address systemic racial oppression. The Blyew case set a precedent in state and federal courts that led to the erosion of Congress's Thirteenth Amendment powers. The Supreme Court continued along this path in the Slaughter-House Cases (1873), which upheld a state-sanctioned monopoly of white butchers. In United States