Whether a state prisoner's procedural default in state court, including failure to appeal, deprives a federal court of power to grant habeas relief when the prisoner's state remedy is no longer available.
Holding
No. A federal habeas court retains power to grant relief from custody that violates the Constitution even though the prisoner previously forfeited a state remedy.
Reasoning
Federal habeas corpus historically serves as an independent remedy against imprisonment contrary to fundamental law. The 1867 habeas statute broadly empowered federal courts to protect state prisoners held in violation of the Constitution, and Congress did not make federal jurisdiction depend on the outcome or completeness of state proceedings.
The adequate-and-independent-state-ground doctrine limits the Supreme Court's appellate review of state judgments because the Court may not issue advisory opinions when an independent state ground would sustain the judgment anyway. Federal district-court habeas jurisdiction is different: it is original and collateral, directed to the prisoner's present custody rather than to revising a state-court judgment.
State procedural rules reflect a legitimate interest in orderly criminal procedure, but that interest does not ordinarily justify leaving a person imprisoned under a conviction admittedly obtained through a coerced confession. A state procedural forfeiture may bar state remedies, but it does not erase the underlying federal constitutional violation or make the resulting custody constitutional.