Kansas v. Crane
The Court ruled that states seeking to civilly commit a dangerous sex offender don't have to prove he is completely unable to control his behavior, but they do have to show he has serious difficulty controlling it. The Kansas Supreme Court had read an earlier Kansas v. Hendricks ruling too strictly, and its decision was vacated and sent back.
The ruling refines the constitutional line between civil commitment of the mentally ill dangerous and ordinary criminal punishment, without adopting either side's rigid bright-line test.
“It is enough to say that there must be proof of serious difficulty in controlling behavior.”
The Court's core standard for when a dangerous sex offender may be civilly committed.
How it got here: A Kansas jury ordered Crane's civil commitment; the Kansas Supreme Court reversed on federal constitutional grounds; Kansas sought Supreme Court review.
The Case in Depth
What happened
Michael Crane, a previously convicted sex offender diagnosed with exhibitionism and antisocial personality disorder, was ordered civilly committed by a Kansas jury under the state's Sexually Violent Predator Act. The Kansas Supreme Court reversed, reading the Supreme Court's earlier Hendricks decision as requiring proof that Crane could not control his dangerous behavior at all, a finding the trial court hadn't made because his impairment was characterized as emotional rather than volitional.
The question before the Court
Before a state can civilly commit a dangerous sex offender, must it prove he's totally unable to control himself, or just that he has serious trouble controlling his behavior?
Why it matters
States running sex-offender civil commitment programs now know they don't need a jury finding of total loss of control, but they can't commit someone based solely on a mental abnormality diagnosis and dangerousness — they must also show serious difficulty controlling behavior. This affects how commitment trials are conducted and instructed nationwide.
What changes now
The case returns to the Kansas courts, which must apply the 'serious difficulty controlling behavior' standard rather than either the state's no-control-finding-required position or the total-incapacity standard the Kansas Supreme Court previously used. Kansas courts will also need to address, on remand, whether Crane's specific diagnosis satisfies this standard, and whether a purely emotional impairment (as opposed to volitional) can support commitment.
What this does not decide
The Court did not decide whether commitment based solely on an 'emotional' abnormality, without any volitional impairment, is constitutional — it left that question open for further proceedings. It also did not specify exactly how a jury should be instructed to find 'serious difficulty' controlling behavior.
Concurrences and dissents
Dissent — Justice Scalia
“Today the Court holds that the Kansas Sexually Violent Predator Act (SVPA) cannot, consistent with so-called substantive due process, be applied as written.”Scalia's objection that the majority was reversing course from the Court's own recent Hendricks ruling.
Justice Scalia argued the Court was distorting its own five-year-old Hendricks ruling, which he read as upholding the Kansas statute as written, without requiring any separate finding of inability to control behavior beyond the statute's mental-abnormality-plus-dangerousness test. He criticized the new 'serious difficulty' standard as incoherent and unworkable, offering no guidance to trial courts on how to instruct juries, and would have simply reversed and reinstated the jury's verdict against Crane.
How the Court got there
The legal reasoning, step by step
- The Court explained that its earlier decision in Kansas v. Hendricks required some link between a person's mental abnormality and an inability to control dangerous behavior, but that the word 'difficult' in that opinion showed the lack of control never had to be total or absolute.
- The Court reasoned that requiring proof of complete lack of control would be unworkable, since even the most severely disturbed people usually retain some ability to control themselves, and an absolutist rule risked letting highly dangerous people go uncommitted.
- At the same time, the Court held the Constitution still requires some lack-of-control finding, because without one, civil commitment could become a stand-in for criminal punishment aimed at retribution or deterrence rather than treatment of illness.
- The Court settled on a middle standard: there must be proof of serious difficulty controlling behavior, assessed in light of the specific psychiatric diagnosis and how severe the mental abnormality is, rather than a fixed rule applied the same way in every case.
- Because Hendricks itself involved pedophilia, a condition the Court described mainly in terms of volitional impairment, the Court found that decision never actually resolved whether someone with a purely 'emotional' rather than 'volitional' impairment could be committed, leaving that question open for the Kansas courts to address on remand.
Doctrinal impact
Cases affected by this decision
Limits Kansas v. Hendricks (521 U.S. 346)
Clarifies that Hendricks did not require proof of total inability to control behavior, only serious difficulty.
Reaffirms Foucha v. Louisiana (504 U.S. 71)
Cited to support rejecting indefinite confinement of any convicted criminal without a special justification.