Whether Schlup’s assertion of innocence was a freestanding substantive claim or a procedural gateway to review of otherwise barred constitutional claims.
Holding
It was a procedural gateway claim, not itself an independent basis for habeas relief.
Reasoning
The Court distinguished Schlup’s claim from the freestanding innocence claim discussed in Herrera v. Collins. A Herrera claimant argues that execution is unconstitutional because he is innocent even if the original trial was wholly fair. Schlup instead alleged that constitutional errors—ineffective assistance of counsel and suppression of exculpatory evidence—undermined the reliability of his trial, and he invoked innocence to overcome procedural obstacles to litigating those claims.
Because Schlup alleged both new evidence of innocence and trial-related constitutional error, he did not need to make the extraordinarily high showing that would be appropriate for a freestanding claim after an assumedly error-free trial. His evidence needed to create sufficient doubt about guilt that a court could not retain confidence in the conviction without deciding whether the trial was tainted by nonharmless constitutional error.