Note 423 — Chapter VII · The Extension of Federal Control through Exclusion from the Mails

As stated by Senator Newlands: “Congress can prohibit the use of the mails by any organization which it considers unlawful or injurious to the public welfare. It can, therefore, declare that any combination organized for the purpose of monopolizing the manufacture, production or sale of any article of commerce, or for the purpose of preventing competition is illegal, and can forbid and prohibit the use of the mails of the United States in aid of such business.” 33 Cong. Rec. (App.), p. 675. See also Remarks of Lanham, 33 Cong. Rec., p. 6324.