Banks v. Dretke
The Supreme Court ruled that a Texas death-row inmate could pursue his claim that prosecutors illegally hid evidence that one key witness was a paid police informant and that another witness's testimony had been secretly coached, even though he raised the claim late in the process.
The decision makes clear that when prosecutors promise open-file disclosure and then conceal witness information, defendants are entitled to rely on that promise rather than independently investigate and expose the government's own misconduct.
“A rule thus declaring "prosecutor may hide, defendant must seek," is not tenable in a system constitutionally bound to accord defendants due process.”
The Court's rejection of the State's argument that defendants must independently ferret out hidden evidence.
How it got here: A federal district court granted habeas relief on the death sentence; the Fifth Circuit reversed and denied a certificate of appealability on a related claim; Banks sought Supreme Court review.
The Case in Depth
What happened
Delma Banks, Jr., was convicted of capital murder in Texas and sentenced to death based largely on testimony from two witnesses, Charles Cook and Robert Farr. Before trial, prosecutors promised to turn over all evidence Banks was entitled to. In reality, the State did not disclose that Farr was a paid police informant or that Cook had been extensively coached before testifying, and it let both witnesses give false testimony about these facts without correction.
The question before the Court
If prosecutors hid that a key witness was a paid police informant and promised full disclosure, can a death-row inmate still get a federal court hearing on that hidden evidence years later?
Why it matters
Death-row and other criminal defendants who relied on a prosecutor's promise of full disclosure won't be penalized in federal court for failing to independently uncover hidden evidence of misconduct. Prosecutors' offices face a clear rule that concealing a witness's informant status or coaching, while claiming an open file, can unravel a conviction or sentence.
What changes now
The case returns to the lower courts for further proceedings consistent with the Supreme Court's ruling. The State must now address the merits of Banks's claim regarding the coached witness, and the death sentence relief tied to the informant's concealment stands pending further proceedings. This is a final merits decision on the legal issues presented, though further litigation may follow on remand.
What this does not decide
The Court did not decide whether Banks's underlying murder conviction was valid — only his death sentence was at issue. It also did not resolve the ineffective-assistance-of-counsel claim, calling any relief on that claim unnecessary given its ruling on the informant issue.
Concurrences and dissents
Dissent in part — Justice Thomas
“I do not believe that there is a reasonable probability that the jury would have altered its finding.”Thomas's core disagreement that the concealed informant evidence was not prejudicial.
Justice Thomas agreed with the Court's ruling on the coached-witness claim but disagreed that hiding the informant's paid status was prejudicial. He argued the jury already had strong evidence of Banks's violence and willingness to help commit armed robbery, so disclosure of the informant's payment likely would not have changed the jury's finding of future dangerousness. He also questioned whether the defendant had shown sufficient cause for his delay.
How the Court got there
The legal reasoning, step by step
- The Court applied the 'cause and prejudice' standard, which lets a habeas petitioner overcome a procedural default if he shows an external reason he couldn't develop evidence earlier (cause) and that the withheld evidence would have mattered to the outcome (prejudice).
- Following its earlier decision in Strickler v. Greene, the Court found 'cause' because the State had promised open-file disclosure, the defendant reasonably relied on that promise, and the State later denied withholding anything when directly asked in state court.
- The Court rejected the State's argument that the defendant should have independently hunted for hints that the prosecution was concealing evidence, reasoning that defendants have no duty to assume prosecutors are lying when the prosecutors affirmatively represent full disclosure.
- Turning to prejudice, the Court applied the materiality test from Kyles v. Whitley, asking whether the withheld evidence could reasonably be seen as undermining confidence in the jury's verdict.
- The Court found the informant's testimony was the centerpiece of the prosecution's case for future dangerousness, uncorroborated by other evidence, and that jurors would likely have distrusted him had they known of his financial and personal incentives to help police, satisfying the materiality requirement.
- On the separate claim involving the second witness's coached testimony, the Court concluded that a federal procedural rule allowing claims raised by implied consent at a hearing applied in habeas cases, so the lower courts should have granted permission to appeal that claim.
Doctrinal impact
Cases affected by this decision
Reaffirms Strickler v. Greene (527 U.S. 263)
The Court relied on Strickler's cause-and-prejudice framework and found this case fit its reasoning even more strongly.