Dretke v. Haley

Out of respect for finality, comity, and the orderly administration of justice, a federal court will not entertain a procedurally defaulted constitutional claim in a petition for habeas corpus absent a showing of cause and prejudice to excuse the default. We have recognized a narrow exception to the general rule when the habeas applicant can demonstrate that the alleged constitutional error has resulted in the conviction of one who is actually innocent of the underlying offense or, in the capital sentencing context, of the aggravating circumstances rendering the inmate eligible for the death…