531 U.S. 457 (2001)
Whitman v. American Trucking Ass'ns, Inc.
Does the Clean Air Act require the EPA to consider the economic costs of compliance when setting national ambient air quality standards, and does the statute constitute an unconstitutional delegation of legislative power?
Under the Clean Air Act, the EPA is mandated to set National Ambient Air Quality Standards based solely on public health concerns, providing an adequate margin of safety, without considering the economic costs of achieving those standards. This follows the principle articulated by Congress that the protection of public health should be the primary focus.
The Supreme Court held that the Clean Air Act does not permit the EPA to consider the economic costs of compliance when setting national ambient air quality standards. Additionally, the Court found that the statutory directive provided by Congress did not constitute an unconstitutional delegation of legislative power.
The significance of this case arises from its interpretation of the Clean Air Act and the broader implications for administrative agencies tasked with enforcing congressional statutes. This case underscores the Supreme Court's approach to statutory interpretation in matters of public health and the environment, highlighting its preference for fulfilling legislative intent as explicitly stated. For law students, Whitman v. American Trucking Ass'ns, Inc. illustrates critical principles of administrative law, such as the non-delegation doctrine and the demarcation of agency powers.