477 U.S. 242 (1986) Cited 237,216 times 38 Legal Analyses
Holding that summary judgment is not appropriate if "the dispute about a material fact is ‘genuine,’ that is, if the evidence is such that a reasonable jury could return a verdict for the nonmoving party"
Holding that text of Title II's prohibition of discrimination by "public entities" against disabled individuals "unmistakably includes State prisons and prisoners within its coverage"
486 U.S. 825 (1988) Cited 876 times 2 Legal Analyses
Holding that ERISA did not pre-empt a state garnishment procedure despite petitioners’ contention that such actions would impose "substantial administrative burdens and costs" on plans
499 U.S. 144 (1991) Cited 599 times 4 Legal Analyses
Holding that a reviewing court should defer to the Secretary of Labor when the Secretary and the Commission provide reasonable but conflicting interpretations of an ambiguous regulation promulgated under the Occupational Safety and Health Act
Holding that the limitations period started when the plaintiff first learned of the disputed covenant, not when the government later attempted to enforce that covenant for the first time
Holding that "the consistency of an agency's position is a factor in assessing the weight that position is due" and that "agency interpretation of a relevant provision which conflicts with the agency's earlier interpretation is entitled to considerably less deference than a consistently held agency view."
28 U.S.C. § 1331 Cited 98,083 times 136 Legal Analyses
Finding that in order to invoke federal question jurisdiction, a plaintiff's claims must arise "under the Constitution, laws, or treaties of the United States."
42 U.S.C. § 7401 Cited 1,378 times 16 Legal Analyses
Finding that “air pollution prevention (that is, the reduction or elimination, through any measures, of the amount of pollutants produced or created at the source) and air pollution control at its source is the primary responsibility of States and local governments”
42 U.S.C. § 7607 Cited 786 times 10 Legal Analyses
Granting the D.C. Circuit original jurisdiction to review "any other nationally applicable regulations promulgated, or final action taken, by the Administrator under this chapter" and granting regional circuits jurisdiction to review "any other final action of the Administrator under this chapter ... which is locally or regionally applicable"
42 U.S.C. § 7413 Cited 563 times 17 Legal Analyses
Granting the Administrator discretion to extend the ambient air quality standard attainment date set in the 1977 Act by up to three years for steelmaking facilities