CITIZEN PUBLISHING CO. et al. v. UNITED STATES

Whether an injunction against a newspaper publisher's attempt to monopolize interstate commerce violates the freedom of the press guaranteed by the First Amendment.

"This case . . . raises questions concerning the constitutional power of a state to apply its antitrade restraint law to labor union activities, and to enjoin union members from peaceful picketing carried on as an essential and inseparable part of a course of conduct which is in violation of the state law. The picketing occurred in Kansas City, Missouri. The injunction was issued by a Missouri state court."

Whether the bylaws and membership practices of the Associated Press violated the Sherman Antitrust Act, and whether applying the antitrust laws infringed the First Amendment’s protection of freedom of the press.