The U.S. Supreme Court case Inland Empire District Council, Lumber & Sawmill Workers Union v. Millis (1944) involved a dispute over the National Labor Relations Board's (NLRB) jurisdiction and authority to certify labor unions for collective bargaining purposes. The plaintiffs, a group of lumber and sawmill workers' unions, challenged the NLRB's decision not to certify them as exclusive representatives for their respective workforces due to alleged unfair labor practices during an election campaign period. They argued that this denial violated their rights under the Wagner Act or National Labor Relations Act of 1935 which guarantees employees’ right to form trade unions and engage in collective bargaining with employers. However, the Supreme Court ruled in favor of Millis who was acting on behalf of NLRB stating that it had acted within its statutory powers when refusing certification based on allegations of misconduct during union elections. The court held that while Congress intended for free choice in representation matters through secret ballot elections among employees, it also empowered NLRB with discretion to ensure these processes are conducted fairly without coercion or interference from any party involved.

The dissenting opinion in the case of Inland Empire District Council, Lumber & Sawmill Workers Union v. Millis argued that the National Labor Relations Board (NLRB) had overstepped its authority by certifying a union as an exclusive bargaining representative without first conducting a formal election among employees. The justices contended that this action violated both the Wagner Act and principles of democratic representation. They believed that only through elections could workers truly express their will regarding union representation, thus ensuring fairness and preventing coercion or undue influence from either employers or unions themselves. Furthermore, they expressed concern about potential abuses of power by the NLRB if it were allowed to certify unions without requiring elections.