The three-drug cocktail used for performing executions by lethal injection in Kentucky (as well as virtually all of the states using lethal injection at the time) is constitutional under the Eighth Amendment. Decided April 16, 2008 (argued January 7, 2008). Opinion of the Court: John Roberts → go there Dissenting: Ginsburg. Applied: the Eighth Amendment → go there Topic: Capital punishment. Baze v. Rees, 553 U.S. 35 (2008), is a decision by the United States Supreme Court, which upheld the constitutionality of a particular method of lethal injection used for capital punishment. Wiki link