Whether Arizona could satisfy Enmund’s requirement of individualized capital culpability by defining an "intent to kill" as merely anticipating that lethal force might be used during a violent felony.
Holding
No. Arizona’s foreseeability-based definition of intent was broader than the intent-to-kill standard recognized in Enmund and could not itself justify the death sentences.
Reasoning
Enmund barred execution of a minor participant in a felony murder who neither killed, attempted to kill, intended to kill, nor possessed a culpable mental state concerning the killing. It required a capital sentence to rest on the defendant’s own conduct and culpability, rather than automatically attributing the killer’s culpability to every felony participant.
Traditional intent means that a defendant desired death to result or knew that death was substantially certain to result. The Arizona Supreme Court did not find that either Tison brother had that kind of intent. Instead, it equated intent with anticipating that lethal force might be used or that life might be taken during the felony.
That formulation was inadequate because bloodshed is generally foreseeable in violent felonies. If foreseeable lethal force were enough, the rule would largely replicate felony-murder liability and could permit execution even in circumstances materially like Enmund’s. The brothers therefore did not fall within Enmund’s category of felony murderers who intended to kill.