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Federalism

State vs. federal power and the commerce clause

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Worcester v. Georgia

Federal government has exclusive authority over Native American affairs

US Term Limits v. Thornton

States can't impose congressional term limits

Massachusetts v. EPA

EPA must regulate greenhouse gases under Clean Air Act

NFIB v. Sebelius

ACA individual mandate upheld as tax, not commerce power

Rucho v. Common Cause

Political gerrymandering is non-justiciable

West Virginia v. EPA

EPA can't regulate power plant emissions without clear authorization