Whether the Due Process Clause requires a jury to consider evidence of a defendant’s voluntary intoxication when deciding whether the defendant possessed the mens rea required for the charged offense.
Holding
No. A plurality concluded that Montana could bar consideration of voluntary-intoxication evidence on the issue of mens rea because the contrary rule is not a fundamental principle of justice protected by due process.
Reasoning
The Due Process Clause does not give a criminal defendant an unrestricted right to introduce all relevant evidence. States may exclude relevant evidence through ordinary evidentiary rules, including rules addressing prejudice, confusion, unreliability, delay, or privilege. A defendant challenging a state criminal procedure therefore bears the demanding burden of showing that it violates a principle of justice deeply rooted in the nation’s traditions and conscience.
Historical practice did not establish a fundamental right to use voluntary intoxication to negate intent. English common law, reflected in Hale, Coke, and Blackstone, generally treated self-induced drunkenness as no excuse for crime and often as an aggravating circumstance. That tradition was understood to apply even though intoxication could impair a person’s reasoning and ability to form intent.
Nineteenth-century courts gradually developed a rule permitting intoxication evidence in prosecutions for specific-intent crimes. But that development was comparatively recent, was initially uneven, and never achieved the universal and enduring acceptance expected of a fundamental constitutional rule. A substantial minority of States either retained or later restored the older rule.
Montana also had legitimate policy grounds for its choice. The State could seek to deter dangerous conduct while intoxicated, hold voluntarily intoxicated offenders responsible for the consequences of impairing their faculties, and reduce the risk that juries would overvalue claims that alcohol made a defendant unable to form intent. Those justifications further undermined the claim that due process compelled the opposite rule.