Massachusetts v. EPA
549 U.S. 497 · U.S. Supreme Court
Holding and boundaries
Held that greenhouse gases are air pollutants under the Clean Air Act and that EPA must ground any refusal to regulate in the statute.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
10 issue placements
Biodiversity, Conservation & Ecosystem Restoration
Massachusetts v. EPA supports or supplies a protective rule relevant to Biodiversity, Conservation & Ecosystem Restoration. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Climate Displacement & Insurance
Massachusetts v. EPA supports or supplies a protective rule relevant to Climate Displacement & Insurance. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Climate & Public Health
Massachusetts v. EPA supports or supplies a protective rule relevant to Climate & Public Health. Fit tier: Strong analogue. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Climate Mitigation, Decarbonization & Clean Energy
Massachusetts v. EPA supports or supplies a protective rule relevant to Climate Mitigation, Decarbonization & Clean Energy. Fit tier: Direct. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Coastal Climate Risk & Insurance
Massachusetts v. EPA supports or supplies a protective rule relevant to Coastal Climate Risk & Insurance. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Disaster Recovery & Community Resilience
Massachusetts v. EPA supports or supplies a protective rule relevant to Disaster Recovery & Community Resilience. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Energy Affordability & Just Transition
Massachusetts v. EPA supports or supplies a protective rule relevant to Energy Affordability & Just Transition. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Inland Water, Drought & Heat
Massachusetts v. EPA supports or supplies a protective rule relevant to Inland Water, Drought & Heat. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Public Infrastructure & Civic-Realm Resilience
Massachusetts v. EPA supports or supplies a protective rule relevant to Public Infrastructure & Civic-Realm Resilience. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Water, Grid & Utility Modernization
Massachusetts v. EPA supports or supplies a protective rule relevant to Water, Grid & Utility Modernization. Fit tier: Contextual. The placement must be used only within the holding and limitations recorded here.
Scope and limitations: Does not prescribe a particular regulatory program or establish every climate injury claim.
Verification-state description: authoritative_text_identified; pinpoint_and_currentness_review_required
Publication and provenance
The authority is published once; issue-specific orientation and fit remain separate placements. Analogue, contextual, and historical-adverse fits are not represented as controlling.
Published under research-publication-clearance-2026-07-21. deterministic validation and objective verification are not claimed.