Antitrust laws Cooperation among oligopolies runs counter to the public interest because it leads to underproduction and high prices. In an effort to bring resource allocation closer to the social optimum, public officials attempt to force oligopolies to compete instead of cooperating. Consider the following scenario: Suppose that executives working for two different automobile manufacturers exchange emails in which they discuss jointly increasing prices for their latest hybrid electric SUVs. This illegal communication would violate which of the following laws? The Robinson-Patman Act of 1936 The Sherman Antitrust Act of 1890 The Celler-Kefauver Act of 1950 The Clayton Act of 1914