In the case of Environmental Protection Agency v. Brown, Governor of California et al., 1976, the U.S Supreme Court was asked to resolve a dispute between federal and state authorities over air pollution control standards. The State of California had set its own stringent vehicle emission standards in an effort to combat severe local air pollution problems. However, these were stricter than those established by the Federal Clean Air Act Amendments (1970). The Environmental Protection Agency (EPA) argued that states could not enforce regulations more rigorous than federal law under this act. In contrast, California contended it should be allowed to maintain higher standards due to its unique environmental challenges. The court ruled in favor of EPA stating that while states have considerable power in controlling local air pollution issues; they cannot impose vehicular emission limitations which are stricter than those prescribed by Federal Law unless they obtain a waiver from EPA allowing them do so.

In the dissenting opinion for the case of Environmental Protection Agency v. Brown, Governor of California et al., Justice William O. Douglas argued that the majority's decision to uphold federal regulations over state laws was a violation of states' rights and an overreach by the federal government. He contended that Congress did not intend for such broad authority when it established environmental standards under the Clean Air Act Amendments in 1970, but rather sought to encourage cooperative efforts between states and federal agencies in addressing pollution issues. Furthermore, he expressed concern about potential negative impacts on local economies due to strict enforcement of these regulations without considering individual circumstances or allowing flexibility for alternative solutions proposed by states themselves.