for a 7–1 majority that the processing of animals in stockyards was so closely tied to interstate commerce as to bring it within the ambit of Congress's power to regulate. A case in which the Taft Court struck down regulation that generated a dissent from the chief justice was Adkins v. Children's Hospital. Congress had decreed a minimum wage for women in the District of Columbia. A 5–3 majority of the Supreme Court struck it down. Justice Sutherland wrote for the majority that the recently ratified Nineteenth Amendment, guaranteeing women the vote, meant that the sexes were equal when it came to bargaining power over working conditions; Taft, in dissent, deemed this unrealistic. Taft's dissent in Adkins was rare both because he authored few dissents, and because it was one of the few times he took an expansive view of the police power of the government. Powers of government In 1922, Taft ruled for a unanimous court in Balzac v. Porto Rico. One of the Insular Cases, Balzac involved a Puerto Rico newspaper publisher who was prosecuted for libel but denied a jury trial, a Sixth Amendment protection under the constitution. Taft held that as Puerto Rico was not a territory designated for statehood, only such constitutional protections as Congress decreed would apply to its residents. In 1926, Taft wrote for a 6–3 majority in Myers v. United States that Congress could not require the president to get Senate approval before removing an appointee. Taft noted that there is no restriction of the president's power to remove officials in the Constitution. Although Myers involved the removal of a postmaster, Taft in his opinion found invalid the repealed Tenure of Office Act, for violation of which his presidential predecessor, Andrew Johnson, had been impeached, though acquitted by the Senate. Taft valued Myers as his most important opinion. The following year, the court decided McGrain v. Daugherty. A congressional committee investigating possible complicity of former Attorney General Daugherty in the Teapot Dome scandal subpoenaed records from his brother, Mally, who refused to provide them, alleging Congress had no power to obtain documents from him. Van Devanter ruled for a unanimous court against him, finding that Congress had the authority to conduct investigations as an auxiliary to its legislative function. Individual and civil rights In 1925, the Taft Court laid the groundwork for the incorporation of many of the guarantees of the Bill