The thirteenth edition continues to provide a comprehensive overview of constitutional law, focusing closely on Supreme Court decisions. Key new principal cases or case summaries -- running the gamut from separation of powers and due process issues generated by the War on Terror, to questions of special standing of states to sue on behalf of their citizens in the fight against global warming, to abortion rights, school integration, voter registration, limits on punitive damages, eminent domain powers, speech in schools, campaign finance regulation, the role of religion in public life, and the entirely new doctrine of individual gun ownership rights outside of militia service -- include:Massachusetts v Environmental Protection AgencyGonzales v. RaichHamdan v. RumsfeldMedellin v. TexasBoumediene v. BushPhilip Morris USA v. WilliamsKelo v. New LondonGonzales v. CarhartDistrict of Columbia v.