505 U.S. 437, 112 S. Ct. 2572, 120 L. Ed. 2d 353 (1992)
In 1984, Teofilo Medina, Jr., stole a gun from a pawnshop in Santa Ana, California.1 Over the following weeks, he committed multiple armed robberies of gas stations, a drive-in dairy, and a market, during which he murdered three employees and shot at two passersby.2 He was apprehended less than a month after the crime spree began and charged with three counts of first-degree murder and other offenses.3
Before trial, Medina's counsel moved for a competency hearing under California Penal Code section 1368, expressing uncertainty about Medina's ability to participate in the proceedings.4 The trial court granted the motion, and a six-day hearing was held before a jury.5 During the hearing, the jury heard conflicting testimony from multiple psychiatrists and psychologists regarding Medina's mental condition, including diagnoses of paranoid schizophrenia and depression, as well as observations of his verbal and physical outbursts, such as overturning the counsel table.6
The trial court instructed the jury that Medina was presumed mentally competent and bore the burden of proving his incompetence by a preponderance of the evidence under California Penal Code section 1369(f).7 The jury found Medina competent to stand trial.8
At the conclusion of the guilt phase, petitioner was found guilty of all three counts of first-degree murder and lesser offenses.9 A sanity hearing was held, and the jury found that petitioner was sane at the time of the offenses.10 At the penalty phase, the jury found that the murders were premeditated and deliberate and returned a verdict of death.11
On direct appeal, the California Supreme Court affirmed the conviction and sentence.12 Medina later filed a habeas corpus petition in the California Supreme Court, which appointed a referee for an evidentiary hearing; the referee found Medina had been competent, and the court adopted those findings.13 Medina then sought federal habeas relief in the United States District Court for the Central District of California, which was denied, and the Ninth Circuit affirmed.14 The Supreme Court granted certiorari to address the constitutionality of the state statute allocating the burden of proof on competency to the defendant.15
Whether the Due Process Clause permits a State to require a defendant to prove by a preponderance of the evidence that he is incompetent to stand trial?16
The Due Process Clause permits a State to require a defendant to prove his incompetence to stand trial by a preponderance of the evidence. The burden-of-proof issue is a matter of state procedural policy entitled to substantial deference under Leland v. Oregon. The rule is consistent with historical practice and due process jurisprudence in other areas. The State's interest in prompt resolution of criminal cases outweighs countervailing concerns.17
Yes. The California statute's presumption of competence and assignment of the burden to Medina under Penal Code section 1369(f) satisfies the rule. Medina received a six-day competency hearing with conflicting expert testimony from multiple psychiatrists and psychologists. The jury applied the preponderance standard after observing his outbursts including overturning the counsel table.
The procedure did not relieve the State of proving the elements of the charged offenses while advancing the State's interest in avoiding complications from assuming the burden itself.18
The Due Process Clause permits a State to require a defendant to prove by a preponderance of the evidence that he is incompetent to stand trial.19
Related opinions on this issue
Joined by Justice Souter
Justice O’Connor joins the Court’s opinion but writes separately to stress that the holding is narrow. It confirms only that a State may place the burden on the defendant to prove incompetence by a preponderance of the evidence. The decision does not require States to adopt this approach or prohibit them from placing the burden on the State or using a different standard.
States retain freedom to experiment with procedures for determining competency as long as those procedures respect fundamental due process principles. This allows for variation in how jurisdictions handle the difficult issue of competency assessments.20
Joined by Justice Stevens
Justice Blackmun dissents because the Constitution requires the State to bear the burden of proving a defendant's competence to stand trial. The prohibition against trying an incompetent defendant is fundamental to the adversary system and rooted in the Due Process Clause. The majority misapplies Leland v. Oregon because sanity at the time of the offense differs fundamentally from present competence to stand trial.
The presumption of competence operates to deprive a defendant of the fundamental right not to be tried while incompetent.2122
Whether a State is required to have a uniform standard of proof for all stages of a criminal proceeding?23
A State is not required to have a uniform standard of proof for all stages of a criminal proceeding.24 The determination of a defendant's competence to stand trial is distinct from the determination of his sanity at the time of the offense. The former assesses present ability while the latter requires retrospective reconstruction that may be difficult.25
No. The California statute's use of a preponderance standard for the competency determination at the pretrial hearing stage satisfies the rule. This stage is separate from the sanity determination at the guilt phase where Medina presented an insanity defense that the jury rejected. The two inquiries address different temporal and functional questions. The State may properly require a higher burden for the contemporaneous competency assessment.26
A State is not required to have a uniform standard of proof for all stages of a criminal proceeding.
Whether the statute’s presumption of competence violates due process?27
The statute’s presumption of competence does not violate due process.28 It is rebuttable rather than conclusive. It is consistent with the common-law tradition and the practice of the vast majority of jurisdictions. The State's significant interest in prompt resolution of cases outweighs concerns that incompetent defendants might be tried.29
No. The California statute's rebuttable presumption under section 1369(f) satisfies the rule. Medina was afforded a full evidentiary hearing with lay and expert testimony after his counsel moved for it under section 1368. The jury resolved the equipoise question against him under the preponderance standard. The procedure provided a reasonable opportunity to demonstrate incompetence without creating a conclusive presumption of the type prohibited in Sandstrom v. Montana.30
The statute’s presumption of competence does not violate due process.
Related opinions on this issue
Joined by Justice Stevens
Justice Blackmun dissents on the ground that the presumption of competence is not a neutral rule. It operates to deprive a defendant of the fundamental right not to be tried while incompetent. This cannot be reconciled with the Due Process Clause given the foundational nature of the prohibition against trying an incompetent defendant.
The right is so critical that protective procedures must minimize the risk of erroneous convictions. In cases where the evidence of competency is equivocal, allowing the presumption to control introduces an unacceptable risk that an incompetent defendant will be tried and convicted.3132