This is a list of cases reported in volume 254 of United States Reports, decided by the Supreme Court of the United States in 1920 and 1921. Justices of the Supreme Court at the time of volume 254 U.S. The Supreme Court is established by Article III, Section 1 of the Constitution of the United States, which says: "The judicial Power of the United States, shall be vested in one supreme Court . . .". The size of the Court is not specified; the Constitution leaves it to Congress to set the number of justices. Under the Judiciary Act of 1789 Congress originally fixed the number of justices at six (one chief justice and five associate justices). Since 1789 Congress has varied the size of the Court from six to seven, nine, ten, and back to nine justices (always including one chief justice). When the cases in volume 254 were decided the Court comprised the following nine members: Notable Cases in 254 U.S. United States v. Wheeler In United States v. Wheeler, 254 U.S. 281 (1920), the Supreme Court held that the Constitution alone does not grant the federal government the power to prosecute kidnappers, even if moving abductees across state lines on federally-regulated railroads at the behest of local law enforcement officials, and only the states have the authority to punish a private citizen's unlawful violation of another's freedom of movement. The case was a landmark interpretation of the Privileges and Immunities Clause of the Constitution, and contains a classic legal statement of the right to travel in American jurisprudence. In most common law jurisdictions, kidnapping had been outlawed by the courts, not by statute, but the Supreme Court had held in United States v. Hudson and Goodwin (1812) that the Constitution prohibited common law crimes. It was only after the Lindbergh kidnapping in 1932, which ended in the death of 21-month-old Charles Lindbergh, Jr., that Congress passed the Federal Kidnapping Act, which prohibited kidnapping. Duplex Printing Press Co. v. Deering Duplex Printing Press Co. v. Deering, 254 U.S. 443 (1921), is an antitrust case in which the Supreme Court examined the labor provisions of the Clayton Antitrust Act and reaffirmed its prior ruling in Loewe v. Lawlor that a secondary boycott was an illegal restraint on trade. The decision authorized courts to issue injunctions to block this practice, and any other tactics used by labor unions that were