Whether Robinson waived his constitutional right to a determination of his competence to stand trial by failing formally to request a competency hearing.
Holding
No. A defendant whose competence is genuinely in question cannot be deemed to have knowingly or intelligently waived the right to a determination of that very question, and this record did not show a waiver.
Reasoning
The State accepted the basic constitutional premise that due process forbids trying or convicting a legally incompetent defendant. It nevertheless argued that Robinson lost that protection by not invoking the available Illinois hearing procedure. The Court found that argument internally inconsistent: a person who may lack the capacity to understand proceedings or assist counsel cannot reliably make a knowing and intelligent waiver of a right designed to protect against trial while incompetent.
The trial record also showed that present mental condition was placed before the court. Defense counsel elicited testimony concerning Robinson's present sanity and argued that he should be found presently insane. The prosecutor likewise sought to introduce the clinic director's opinion on whether Robinson was sane. Although the participants often used the statutory term "insanity," the Court read that language in context as raising the related question of competence to stand trial.