Tennard v. Dretke, Director, Texas Department of Criminal Justice, Correctional Institutions Division
The Supreme Court ruled that a Texas death row inmate should have been allowed to appeal his claim that the state's capital sentencing questions did not let jurors properly weigh his low IQ evidence, rejecting a Fifth Circuit screening test that filtered out such claims before they were ever fully considered.
The decision struck down the Fifth Circuit's practice of requiring mitigating evidence to be a 'uniquely severe' handicap tied directly to the crime before jurors' failure to consider it could even be examined, a standard the Court found had no basis in its own precedents.
How it got here: Texas courts and a federal district court rejected Tennard's claim and denied him permission to appeal; the Fifth Circuit agreed, and the Supreme Court agreed to review that denial.
The Case in Depth
What happened
Robert Tennard was sentenced to death in Texas for a 1985 murder and robbery. At his sentencing, his lawyer presented evidence that Tennard had a 67 IQ, arguing this diminished his culpability. Texas juries at the time decided punishment by answering two yes-or-no 'special issues' about whether the killing was deliberate and whether Tennard posed a future danger, without a direct way to weigh diminished mental capacity as a reason for leniency.
The question before the Court
Should a death row inmate with a 67 IQ have been allowed to appeal his claim that Texas's sentencing questions kept jurors from fully weighing his low intelligence?
The Court's answer
Yes — the Supreme Court ruled that Tennard should have been granted permission to appeal. To get that permission, a prisoner only needs to show that reasonable judges could disagree about whether the trial court's constitutional ruling was right, and the Court found that standard easily met here. The Fifth Circuit had instead required Tennard to first prove his low IQ was a 'uniquely severe' handicap directly tied to the crime — a test the Court found had no basis in its prior cases.
Applying the correct, much lower bar for what counts as relevant mitigating evidence, the Court found real doubt about whether Texas's sentencing questions let jurors treat Tennard's low IQ as a reason for leniency, especially since the prosecutor argued the evidence was irrelevant to mitigation. That doubt was enough to require a full appeal, though the Court did not decide whether Tennard's sentence is ultimately unconstitutional.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Death row prisoners in Texas and other states within the Fifth Circuit had been having their appeals cut off by a legal filter that required proving their mental impairment was both extremely severe and directly linked to the crime. Removing that filter makes it easier for capital defendants with intellectual limitations to get federal courts to actually examine whether their sentencing juries could properly weigh that evidence.
What changes now
The case returns to the Fifth Circuit, which must now actually hear the merits of Tennard's appeal instead of screening it out. This is a final Supreme Court ruling on the narrow legal question of whether the appeal should have been allowed; it does not decide whether Tennard's death sentence is ultimately unconstitutional, leaving that question for further proceedings in the lower courts.
What this does not decide
The Court did not decide whether Tennard's death sentence actually violates the Eighth Amendment — only that reasonable judges could debate the question, meaning he is entitled to a full appeal. The merits of his underlying claim remain to be resolved by the lower courts on remand.
Concurrences and dissents
Dissent — Justice Rehnquist
“Because I believe that reasonable jurists would not find the District Court's assessment of the constitutional claims debatable or wrong, I dissent.”Rehnquist's core objection that the appeal should not have been granted.
Chief Justice Rehnquist argued that the district court got it right: Tennard's low-intelligence evidence, unlike Penry's mental retardation evidence, could be adequately weighed by jurors through the existing sentencing questions. He distinguished low intelligence from mental retardation, noting there was no medical evidence here that Tennard's low IQ prevented him from learning from experience, so no reasonable judge could see the case as debatable.
Dissent — Justice Scalia
Justice Scalia argued that the entire line of cases requiring juries to have unchanneled discretion to give mitigating evidence full effect has no basis in the Constitution and deserves no special deference as settled law. He said the lower courts had appropriately narrowed this problematic doctrine and that the majority ignored the Court's own inconsistent precedents rather than confronting them.
Dissent — Justice Thomas
Justice Thomas reiterated his long-held view that the Penry decision did such violence to the Court's settled precedents that it should not be treated as binding law, and joined Justice Scalia in concluding that an appeal should not be granted based on a right derived from what he considers flawed precedent.
How the Court got there
The legal reasoning, step by step
- The Court explained that to get permission to appeal a denied habeas petition (a certificate of appealability), a prisoner only needs to show that fair-minded judges could disagree about whether the trial court's ruling on his constitutional claim was right, not that he must actually win the underlying claim.
- The Court found that the Fifth Circuit had instead applied its own extra screening rule, requiring mitigating evidence to be a 'uniquely severe permanent handicap' connected by a direct 'nexus' to the crime before the appeal could even be considered.
- Looking to its own precedent on what counts as relevant mitigating evidence in death penalty cases, the Court held that the bar is the same as in any other legal context: evidence counts if it has any tendency to make a fact of consequence more or less likely, a very low threshold.
- Applying that low threshold, the Court found the Fifth Circuit's stricter test could wrongly exclude evidence, such as good character traits, that has nothing to do with a 'severe handicap' but could still lead a juror to choose a lesser sentence.
- The Court then compared Tennard's low-IQ evidence to the mental retardation evidence from its earlier decision in Penry v. Lynaugh, finding the same problem: Texas's two sentencing questions gave jurors no clear way to treat low intelligence as a reason to show mercy, and the prosecutor had even argued the evidence was irrelevant to mitigation.
- Because fair-minded judges could disagree with the district court's rejection of this claim, the Court concluded a certificate of appealability should have been granted.
Doctrinal impact
Cases affected by this decision
Reaffirms McKoy v. North Carolina (494 U.S. 433)
The Court relies on this case's broad, ordinary-evidence definition of what counts as mitigating evidence.
Reaffirms Penry v. Lynaugh (492 U.S. 302)
The Court applies Penry's rule that juries must be able to give effect to mitigating evidence to Tennard's low-IQ evidence.