Hodges v. United States (1906), the Court struck down a federal statute providing for the punishment of two or more people who "conspire to injure, oppress, threaten or intimidate any citizen in the free exercise or enjoyment of any right or privilege secured to him by the Constitution or laws of the United States". A group of white men in Arkansas conspired to violently prevent eight black workers from performing their jobs at a lumber mill; the group was convicted by a federal grand jury. The Supreme Court ruled that the federal statute, which outlawed conspiracies to deprive citizens of their liberty, was not authorized by the Thirteenth Amendment. It held that "no mere personal assault or trespass or appropriation operates to reduce the individual to a condition of slavery." Harlan dissented, maintaining his opinion that the Thirteenth Amendment should protect freedom beyond "physical restraint". Corrigan v. Buckley (1922) reaffirmed the interpretation from Hodges, finding that the amendment does not apply to restrictive covenants. Enforcement of federal civil rights law in the South created numerous peonage cases, which slowly traveled up through the judiciary. The Supreme Court ruled in Clyatt v. United States (1905) that peonage was involuntary servitude. It held that although employers sometimes described their workers' entry into contract as voluntary, the servitude of peonage was always (by definition) involuntary. In Bailey v. Alabama the U.S. Supreme Court reaffirmed its holding that the Thirteenth Amendment is not solely a ban on chattel slavery, it also covers a much broader array of labor arrangements and social deprivations. In addition to the aforesaid the Court also ruled on Congress enforcement power under the Thirteenth Amendment. The Court said: The plain intention [of the amendment] was to abolish slavery of whatever name and form and all its badges and incidents; to render impossible any state of bondage; to make labor free, by prohibiting that control by which the personal service of one man is disposed of or coerced for another's benefit, which is the essence of involuntary servitude. While the Amendment was self-executing, so far as its terms were applicable to any existing condition, Congress was authorized to secure its complete enforcement by appropriate legislation. Jones and beyond Legal histories cite Jones v. Alfred H. Mayer Co. (1968) as a turning point of Thirteen Amendment jurisprudence.Colbert, "Liberating the Thirteenth Amendment" (1995), p. 2. The Supreme Court confirmed in Jones that Congress