The Supreme Court ruled, 5–4, that a state cannot indefinitely confine an insanity acquittee in a psychiatric facility once he is no longer mentally ill, even if he is thought to be dangerous. To justify continued confinement, the state must show both that the person is currently mentally ill and that he is dangerous. Dangerousness alone is not enough.
In plain terms
Terry Foucha was charged with a burglary and firing a weapon. He was found not guilty by reason of insanity because he was in a drug-induced psychotic state at the time, and he was committed to a state psychiatric hospital. Years later, his doctors said the psychosis had resolved. He was no longer mentally ill. What remained was an antisocial personality disorder, which the hospital's own physician testified is not a mental illness. Louisiana wanted to keep him locked in the psychiatric facility anyway, on the theory that he might still be dangerous, and Louisiana law put the burden on Foucha to prove he was not dangerous in order to get out. The Supreme Court said no. Once the mental illness that justified the psychiatric commitment is gone, the state cannot keep holding the person in a psychiatric hospital just because he might be dangerous. If the state wants to confine someone, it has to either civilly commit him under the ordinary standards (which require current mental illness plus dangerousness) or charge and convict him of a crime. It cannot hold a person who is not mentally ill and not convicted of anything in an indefinite psychiatric limbo.
Section 01
The Question Presented
What was at stake
Terry Foucha was charged in Louisiana in 1984 with aggravated burglary and illegal discharge of a firearm. He did not go to trial in the ordinary way. Two medical experts examined him and concluded that at the time of the offenses he was unable to distinguish right from wrong because he was in a drug-induced psychosis. The court found him not guilty by reason of insanity and committed him to the East Feliciana Forensic Facility, a secure state psychiatric hospital.
Four years later, in 1988, the facility recommended that Foucha be released. The reason was straightforward: the drug-induced psychosis that had made him legally insane at the time of the crime had cleared. He was no longer mentally ill in the clinical sense. A panel and the testifying physician agreed on this point. What the physician would not do was certify that Foucha posed no danger to himself or others, because Foucha had an , a condition the physician expressly described as not a mental disease and one for which there was no effective treatment.
Louisiana law at the time allowed an insanity acquittee to be held until he could prove that he was not dangerous, regardless of whether he was still mentally ill. Under that scheme, the trial court held that Foucha had failed to carry the burden of proving he was not dangerous, and it ordered him returned to the psychiatric facility. The Louisiana Supreme Court affirmed.
The question for the Supreme Court was whether a state may continue to confine, in a psychiatric institution and potentially for life, a person who was acquitted by reason of insanity but who is no longer mentally ill, solely on the ground that he is unable to prove he would not be dangerous if released. That question sits at the intersection of and the limits on civil confinement the Court had drawn in earlier cases.
Section 02
The Bench
Who joined which side
The decision was 5 to 4, and the majority was not entirely unified. Justice White wrote the opinion of the Court. Justices Blackmun, Stevens, and Souter joined all of it. Justice O'Connor joined the core due process holding and provided the fifth vote, but she wrote separately and did not join the part of White's opinion addressing equal protection, and she was careful to describe a narrower path than the full majority. Under the convention used in these explainers, her partial concurrence is marked in gold.
The four dissenters split their reasoning across two opinions. Justice Kennedy, joined by Chief Justice Rehnquist, argued that the criminal process that produced the insanity acquittal justified continued confinement. Justice Thomas, joined by the Chief Justice and Justice Scalia, argued that the majority had misread the Court's precedents and that Louisiana's scheme was constitutionally permissible.
The Rehnquist Court · Vote 5–4
W
White
Author
B
Blackmun
Joined
S
Stevens
Joined
S
Souter
Joined
O
O'Connor
Concur in Part
R
Rehnquist
Dissented
K
Kennedy
Dissented
S
Scalia
Joined Dissent
T
Thomas
Dissented
Majority (4)
Concurrence (1)
Dissent (4)
✦ Opinion author
“
Freedom from bodily restraint has always been at the core of the liberty protected by the Due Process Clause from arbitrary governmental action.
Justice White, writing for the Court
Section 03
The Reasoning
Two positions
The two sides agreed on the starting facts: Foucha was no longer mentally ill, and the state wanted to keep confining him because it considered him dangerous. Where they split was on whether the original insanity acquittal, plus present dangerousness, was enough to sustain indefinite psychiatric confinement once the mental illness was gone. The majority said no. The dissenters said the state's interest in public safety, grounded in a proven criminal act, was sufficient.
The Majority
Confinement in a psychiatric hospital requires current mental illness, not just dangerousness.
The basis for the commitment had disappeared. An insanity acquittee is committed because he was found to have committed a criminal act and to have been mentally ill at the time. The state may hold him while he is both mentally ill and dangerous. But when the mental illness is gone, as everyone agreed it was for Foucha, the justification for holding him in a psychiatric facility evaporates with it.
Freedom from bodily restraint is at the core of due process. Physical confinement by the state is the kind of deprivation that the Due Process Clause exists to constrain. Holding a person who is not mentally ill and not serving a criminal sentence, indefinitely and potentially for life, is exactly the kind of arbitrary restraint due process forbids.
Jackson and Donaldson control. The Court had already held in Jackson v. Indiana (1972) that the nature and duration of confinement must bear a reasonable relation to its purpose, and in O'Connor v. Donaldson (1975) that a state cannot confine a non-dangerous person who is capable of surviving in freedom. Read together, these cases mean that psychiatric confinement requires both mental illness and dangerousness. Louisiana was trying to hold Foucha on dangerousness alone.
The burden was backwards. Louisiana required Foucha to prove that he was not dangerous in order to win his release. But once the state can no longer show current mental illness, it is the state that must justify continued confinement, not the individual who must justify freedom. Placing the burden on the acquittee to prove a negative, in order to escape indefinite confinement, compounded the due process problem.
Dangerousness alone would prove too much. If the state could confine Foucha indefinitely because he has a personality disorder that might lead to criminal conduct, then it could confine almost anyone shown to have such a disorder. The criminal law, with its guarantees of a trial, proof beyond a reasonable doubt, and a fixed sentence, is the constitutional route for confining dangerous people. A psychiatric facility is not a substitute for it.
The Dissenters
A proven criminal act plus present dangerousness can justify continued confinement.
The insanity acquittal is not an ordinary acquittal. Kennedy argued that to reach a verdict of not guilty by reason of insanity, the state must first prove beyond a reasonable doubt that the defendant committed a criminal act. The acquittee is therefore in a different position from an ordinary citizen: he has been shown to have done the act, and only escaped conviction because of his mental state at the time. That proven act gives the state a stronger interest in continued supervision.
The state's interest in public safety is legitimate and weighty. Louisiana's scheme was designed to protect the public from people who had already committed dangerous criminal acts and remained dangerous. The dissenters saw the state's continued confinement of a person who is dangerous, based on that record, as a rational and permissible exercise of the state's protective power, not an arbitrary deprivation of liberty.
The majority misread the precedents. Thomas argued that Jackson and Donaldson involved ordinary civil committees, not insanity acquittees who had been proven to commit crimes. Extending those cases to require the release of a dangerous insanity acquittee simply because his diagnosis had changed misapplied precedent and ignored the distinct legal status of a person acquitted by reason of insanity.
States need latitude in a difficult area. Predicting dangerousness and managing the release of insanity acquittees is genuinely hard, and states have historically had substantial room to design their own systems. The dissenters would have deferred to Louisiana's legislative judgment about how to balance individual liberty against public safety, rather than imposing a single constitutional rule that mental illness must always accompany dangerousness.
Section 04
What the Court Did Not Decide
Read this carefully
Foucha is a genuinely important limit on psychiatric confinement, but its holding is narrower than it can first appear, and the fractured majority left several questions open. The line between this case and later cases like Kansas v. Hendricks is one of the most consequential in this area of law.
Common misreads to avoid
Foucha limits psychiatric confinement of the non-mentally-ill. It did not settle everything that followed.
It did not bar all confinement of dangerous people. Foucha does not say the state is powerless against a dangerous person. It says the state cannot use indefinite psychiatric commitment as the tool when the person is not currently mentally ill. The state's ordinary options, criminal prosecution or civil commitment under proper standards, remain fully available. What it cannot do is skip both and hold the person in psychiatric limbo.
It did not define mental illness for commitment purposes. Everyone in the case accepted that Foucha's antisocial personality disorder was not the kind of mental illness that justified his psychiatric commitment. The Court did not lay down a general rule about which diagnoses do or do not qualify. That question was left for future cases and for the states, and it became central just five years later.
It did not survive intact in Kansas v. Hendricks (1997). Five years after Foucha, the Court upheld Kansas's Sexually Violent Predator Act, which permits the civil commitment of people found to have a "mental abnormality" making them likely to commit future acts of sexual violence, even when that abnormality is not a traditional mental illness. Hendricks distinguished Foucha rather than overruling it, but the two cases sit in real tension. Reading Foucha without reading Hendricks gives an incomplete and overly clean picture of the law.
It did not resolve the burden-of-proof question for every scheme. The Court faulted Louisiana for putting the burden on the acquittee to prove he was not dangerous once mental illness was absent. It did not comprehensively specify how burdens must be allocated in every insanity-acquittee release scheme, and states continue to structure these procedures in varying ways within the outer limits Foucha set.
It did not disturb the initial commitment of insanity acquittees. Foucha does not question a state's power to commit a person after an insanity acquittal in the first place. Under Jones v. United States (1983), the acquittal itself supplies an adequate basis for initial commitment. Foucha addresses only what happens later, when the mental illness that grounded the commitment has resolved.
The equal protection ground did not command a majority. White's opinion included a section arguing that Louisiana's scheme also violated equal protection by treating insanity acquittees worse than civil committees. O'Connor did not join that section, so it did not carry five votes. The controlling ground of the decision is due process, not equal protection.
Section 05
How It Got Here
The path to SCOTUS
Foucha's case moved from an insanity acquittal through a release hearing and up through the Louisiana courts while he remained confined in a facility he was, by the state's own account, no longer mentally ill enough to need. The timeline shows how a person can end up held for years on a basis that has quietly disappeared.
1984 · Louisiana
Charges and insanity acquittal
Terry Foucha is charged with aggravated burglary and illegal discharge of a firearm. Medical experts find that he was in a drug-induced psychotic state at the time and could not distinguish right from wrong. The court finds him not guilty by reason of insanity and commits him to the East Feliciana Forensic Facility, a secure state psychiatric hospital.
1988 · East Feliciana Forensic Facility
Doctors report the psychosis has resolved
The facility recommends Foucha's release. The panel and the testifying physician agree that the drug-induced psychosis has cleared and that Foucha is no longer mentally ill. The physician declines to certify that Foucha is not dangerous, citing an antisocial personality disorder, which he describes as not a mental disease and as untreatable.
State Trial Court
Return to confinement ordered
Applying Louisiana law, the trial court holds that Foucha bears the burden of proving he is not dangerous in order to be released. Finding that he has not carried that burden, the court orders him returned to the psychiatric facility, even though he is no longer mentally ill.
Louisiana Supreme Court
State supreme court affirms
The Louisiana Supreme Court affirms, upholding the statutory scheme that allows an insanity acquittee to be confined on the basis of dangerousness alone, with the burden on the acquittee to prove otherwise. Foucha petitions the United States Supreme Court for certiorari.
May 18, 1992 · Supreme Court of the United States
Supreme Court reverses, 5–4
Justice White writes for the Court. Louisiana's scheme violates due process because it permits the indefinite psychiatric confinement of an insanity acquittee who is no longer mentally ill, based on dangerousness alone and with the burden improperly placed on the acquittee. Justice O'Connor concurs in part and in the judgment, supplying the fifth vote on the narrower due process ground. Justices Kennedy and Thomas file dissents. Foucha must be released or confined through a constitutionally adequate route.
Section 06
For Practice
The social work bridge
Foucha matters to any social worker whose practice touches forensic mental health, civil commitment, or the release of people from psychiatric confinement. Its central rule protects a specific and vulnerable population: people who were committed after an insanity acquittal, who have clinically recovered, but whom the system is reluctant to release. It also carries a caution about how personality-disorder diagnoses can be used. Three lenses help orient the practitioner.
Recovery Lens
Clinical recovery has legal consequences.
When the mental illness that grounded a psychiatric commitment resolves, that clinical fact has direct legal weight: the basis for continued psychiatric confinement is gone. For social workers involved in treatment planning and release evaluations for insanity acquittees, documenting recovery accurately is not a neutral clinical act. It can be the difference between lawful confinement and unlawful detention. Foucha means that a clear finding of no current mental illness cannot simply be overridden by generalized worry about dangerousness.
Dual Requirement Lens
Mental illness and dangerousness, not one alone.
Foucha, read with Jackson and Donaldson, establishes that psychiatric confinement generally requires both current mental illness and dangerousness. Neither alone is enough. A client cannot be held in a psychiatric facility solely because he is thought dangerous, and cannot be held solely because he is mentally ill if he is not dangerous and can survive in freedom. When you encounter a client held on only one of these two prongs, that is a signal to involve legal advocacy.
Diagnosis Lens
Watch how personality disorders get used.
The pivot in Foucha was that antisocial personality disorder was treated as not a mental illness for commitment purposes, and the state tried to use it plus dangerousness to justify indefinite confinement. Personality-disorder diagnoses, and the label of dangerousness that often travels with them, can become a mechanism for extended control of clients who are difficult but not committable. Foucha is a caution to watch for diagnoses being used less to guide treatment than to justify continued confinement, and to recognize when that crosses a constitutional line.
Section 07
A Working Vocabulary
Legal terms
Foucha uses the vocabulary of the insanity defense, civil commitment, and substantive due process. Here are the key terms as they are used in this case.
Frequently Used in This Opinion
Not guilty by reason of insanity
A verdict finding that the defendant committed the criminal act but is not criminally responsible because of a mental illness that impaired his understanding at the time. It is not a finding of innocence. The state must first prove the act occurred. The person is then typically committed to a psychiatric facility rather than sentenced to prison.
Insanity acquittee
A person who has been found not guilty by reason of insanity and committed to psychiatric care. Foucha addresses the constitutional limits on how long, and on what basis, such a person can be held once the mental illness that led to the acquittal and commitment has resolved.
Antisocial personality disorder
A personality disorder marked by a persistent pattern of disregard for the rights of others. In Foucha, the testifying physician described it as not a mental disease and as untreatable. That characterization is what let the majority say Foucha was no longer mentally ill, removing the basis for his psychiatric confinement.
Substantive due process
The principle that the Due Process Clause protects certain fundamental interests from government interference regardless of the procedures used. Freedom from bodily restraint is one such core interest. Foucha rests on the substantive point that the state cannot indefinitely confine a person who is neither mentally ill nor convicted of a crime.
Civil commitment
The involuntary confinement of a person on the basis of mental illness plus dangerousness or grave disability, under state mental health law and with its own procedural protections. Foucha holds that if the state wants to continue confining a recovered insanity acquittee, it must use this route and meet its standards, rather than holding him on dangerousness alone.
Dangerousness
A predictive judgment that a person is likely to harm himself or others. Dangerousness is one necessary component of civil confinement, but Foucha holds that it is not sufficient on its own. Without current mental illness, dangerousness alone cannot justify holding a person in a psychiatric facility.
O'Connor v. Donaldson (1975)
An earlier Supreme Court case holding that a state cannot constitutionally confine a non-dangerous individual who is capable of surviving safely in freedom. Foucha relies on Donaldson for the principle that mental illness alone, without dangerousness, cannot justify confinement, and pairs it with the converse.
Jackson v. Indiana (1972)
An earlier Supreme Court case holding that the nature and duration of a commitment must bear a reasonable relation to its purpose. Foucha applies this principle: once the purpose of the commitment (treating a mental illness) no longer exists, continued confinement on that basis cannot stand.
Antisocial personality disorder A personality disorder marked by a persistent disregard for the rights of others. In Foucha, the state's own physician called it not a mental disease and untreatable, which meant Foucha was no longer mentally ill for commitment purposes.
Substantive due process The principle that the Due Process Clause protects fundamental interests, including freedom from bodily restraint, from arbitrary government interference regardless of the procedures used. Foucha rests on this ground.