As part of its regulation of the Arizona Bar, the Supreme Court of that State has imposed and enforces a disciplinary rule that restricts advertising by attorneys. This case presents two issues: whether §§ 1 and 2 of the Sherman Act, 15 U. S. C. §§ 1 and 2, forbid such state regulation, and whether the operation of the rule violates the First Amendment, made applicable to the States through the Fourteenth.[1]

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