In the case of United States v. Congress of Industrial Organizations et al., 1947, the Supreme Court was tasked with interpreting Section 313 of the Federal Corrupt Practices Act (FCPA). The FCPA prohibited corporations and labor unions from making contributions or expenditures in connection with federal elections. The Congress of Industrial Organizations (CIO) had published a magazine that included endorsements for specific candidates, which led to charges against them under this act. However, in a unanimous decision, the court ruled that such publications did not violate Section 313 as they were part of regular union activities aimed at informing members about political issues and candidates rather than direct contributions or expenditures related to election campaigns. Therefore, it held that CIO's actions fell within their First Amendment rights to freedom of speech and assembly.

In the dissenting opinion for United States v. Congress of Industrial Organizations et al., Justice Wiley Rutledge argued that the Taft-Hartley Act's prohibition on labor union expenditures in federal elections should not be interpreted to cover publications distributed solely among union members. He contended that such a broad interpretation would infringe upon First Amendment rights, as it would limit unions' ability to communicate with their own members about political matters. Furthermore, he believed this interpretation could potentially extend to other organizations and associations, leading to an overly restrictive view of permissible political activity. In his view, only direct contributions or expenditures aimed at influencing non-members should fall under the purview of the Act's restrictions.