The U.S. Supreme Court case Oklahoma Press Publishing Co. v. Walling, Wage and Hour Administrator in 1945 revolved around the issue of whether or not the Fair Labor Standards Act (FLSA) could be applied to newspaper companies, specifically regarding overtime pay for their employees. The Oklahoma Press Publishing Company argued that they were exempt from these regulations as a news organization and that enforcing such rules would infringe upon their First Amendment rights to freedom of press by interfering with editorial decisions about staffing levels and hours worked. However, the court ruled against them stating that FLSA was applicable even to newspaper companies because it did not directly interfere with content production but rather regulated employment conditions which fell within Congress's power under Commerce Clause. Furthermore, it held that subpoenas issued by an administrator under this act were valid if they sought relevant evidence for investigations into possible violations of labor standards; hence rejecting claims on Fourth Amendment grounds too. This decision affirmed federal authority over wage-hour laws across industries while also clarifying constitutional boundaries between free speech/press protections and regulatory powers concerning commerce.

In the dissenting opinion for Oklahoma Press Publishing Co. v. Walling, Justice Frank Murphy argued that the majority's decision to allow an administrative subpoena without a prior judicial determination of probable cause was a violation of Fourth Amendment protections against unreasonable searches and seizures. He contended that this ruling gave excessive power to administrative agencies, allowing them to conduct invasive investigations into private businesses based on mere suspicion or desire for information rather than concrete evidence of wrongdoing. Furthermore, he expressed concern about potential abuses of this power by government officials and warned that such unchecked authority could lead to oppressive governmental practices reminiscent of totalitarian regimes. In his view, requiring a preliminary showing of probable cause before issuing an administrative subpoena would provide necessary safeguards while still enabling effective law enforcement.