In the many years since the passage of the Sherman Anti-Trust Act its substantive provisions have gone unamended. The Act proscribes concerted action resulting in restraints of trade or directed toward achieving monopoly power and single-enterprise action directed toward achieving monopoly power or the exercise of existent monopoly power already achieved. This in not to say that there has not been considerable legislation enacted subsequent to the Sherman Act proscribing both general and specific business enterprise activity some of which might well have been read into the Sherman Act by judicial interpretation. Particularly notable are the Federal Trade Commission Act and the Clayton Act.
Richard S. Kelley,
John Won't Sell - Bill Won't Buy - Does It Matter What the Reason Why-Antitrust Refusals to Deal,
San Diego L. Rev.
Available at: https://digital.sandiego.edu/sdlr/vol4/iss1/2