The law that created rules governing interest group contributions to federal campaigns and permitted the formation of PACs is the Federal Election Campaign Act (FECA) , enacted in 1971. This law established essential regulations for campaign financing and provided a framework for the operation of PACs. The FECA was pivotal in shaping the political contribution landscape in the United States.
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The law that created rules for how interest groups could contribute to federal campaigns and allowed for PACs was the Tillman Act, enacted in 1907. This act aimed to prevent corporate influence in politics by banning corporation contributions to federal elections. The act established a framework that later influenced further campaign finance laws and regulations. ;