Whether the Court should apply heightened equal-protection scrutiny to Kentucky's distinctions between commitment proceedings based on mental retardation and those based on mental illness.
Holding
No. The Court declined to consider heightened scrutiny because respondents raised that theory for the first time in the Supreme Court.
Reasoning
The parties had litigated the case in the lower courts on the shared premise that rational-basis review governed, and both lower courts decided it on that basis. Respondents acknowledged that they first pressed heightened scrutiny in their merits brief before the Supreme Court.
Applying a new, more demanding standard at that late stage would have been unfair and imprudent. Rational-basis review does not require the State to build an evidentiary record, whereas heightened review might require a substantially different factual showing. The Court therefore reviewed the statutes as the case had been presented below.