| Term | Definition |
| Mapp v. Ohio | established the exclusionary rule; evidence illegally obtained cannot be used in court; Warren Court's judicial activism |
| Gideon v. Wainwright | ordered states to provide lawyers for those unable to afford them; Sixth and Fourteenth Amendments; Warren Court's judicial activism |
| Miranda v. Arizona | est. miranda warnings of counsel and silence for the accused; must be given before questioning; warren court's judicial activism for criminals |
| US v. Lopez | court ruled that gun-free school zone act exceeded Congress' authority to regulate interstate commerce; Congress must defer to states |
| US v. Leon | weakened Mapp v. Ohio; allowed a "good faith" exception to the exclusionary rule as long as the core values of Mapp v. Ohio were not violated |
| Dickerson v. US (2000) | court upheld the miranda decision; struck down a congressional act allowing voluntary confessions to be accepted before their miranda rights had been read |
| Gregg v. Georgia (1976) | made capital punishment constitutional; overturned a previous decision which stated that capital punishment was unconstitutional |
| Furman v. Georgia (1972) | stated that capital punishment was unconstitutional |