Constitutional and administrative doctrines governing federal oversight, tort liability, and environmental statutory interpretation.
Articulated firmly in West Virginia v. EPA (2022), this canon presumes Congress does not delegate decisions of vast economic and political significance through modest or vague statutory provisions without unmistakable clarity.
Established in AEP v. Connecticut (2011), the Clean Air Act displaces federal common law nuisance claims regarding greenhouse gases. Ongoing battles center on whether state common law torts and consumer deception suits survive.
With the overruling of Chevron v. NRDC in 2024, federal courts no longer grant binding deference to EPA interpretations of ambiguous environmental statutes, applying independent judicial textual scrutiny.