Cruz v. Arizona
The Supreme Court ruled that Arizona could not use a novel, never-before-applied interpretation of its own procedural rules to shut out a death-row inmate's constitutional claim from federal review.
The decision reinforces a longstanding principle that state courts cannot invent procedural barriers — especially unprecedented ones — to block federal courts from examining constitutional violations, and sends John Cruz's case back to the Arizona courts for another look.
How it got here: The Arizona Supreme Court denied Cruz's successive postconviction petition; he asked the U.S. Supreme Court to review that ruling, and the Court agreed, limited to the procedural-adequacy question.
The Case in Depth
What happened
John Cruz was sentenced to death by an Arizona jury. Under a constitutional rule from Simmons v. South Carolina, defendants have the right to tell their jury that the only alternative to a death sentence is life without any possibility of parole. Arizona courts incorrectly told Cruz he had no such right. After his conviction was final, the Supreme Court ruled in Lynch v. Arizona that Arizona courts had been wrong all along. Cruz then sought to reopen his case under an Arizona rule allowing a new petition when there has been a "significant change in the law" — and was denied.
The question before the Court
Could Arizona use a newly invented reading of its own procedural rules to prevent a death-row inmate from reopening a case where courts had previously misapplied his constitutional rights?
The Court's answer
Yes — Arizona's procedural barrier was not valid, and Cruz's constitutional claim can proceed.
The Supreme Court ruled that the Arizona Supreme Court's determination that Lynch v. Arizona did not constitute a "significant change in the law" was so novel and unsupported by Arizona's own prior case law that it could not serve as a legitimate procedural ground to block federal review. Arizona courts had long defined a "significant change in the law" as the overruling of previously binding precedent — exactly what Lynch did. The Arizona court's newly invented distinction between a "change in the law" and a "change in the application of the law" appeared nowhere in its prior decisions, contradicted its own stated definition, and created an impossible catch-22 for Cruz and similarly situated inmates. Because the procedural ruling was so unprecedented, it was not "adequate" under federal law to foreclose review of Cruz's constitutional claim.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Other Arizona death-row inmates who were similarly denied the right to tell their juries about parole ineligibility may be able to cite this ruling to reopen their cases. More broadly, the decision limits any state court's ability to conjure novel procedural technicalities to shut constitutional claims out of court before they can ever be reviewed on the merits.
What changes now
The case returns to the Arizona courts, which must now reconsider Cruz's petition for postconviction relief — treating Lynch v. Arizona as a "significant change in the law" for purposes of Rule 32.1(g). The Arizona courts will then address whether Cruz is entitled to relief on his underlying constitutional claim, which is that he was unconstitutionally denied the right to tell his jury that the only alternative to death was life without parole. The Supreme Court has not decided whether his death sentence must be overturned.
What this does not decide
The Court did not decide whether Cruz's death sentence must actually be overturned or whether he is entitled to a new sentencing hearing. It also expressly declined to reach whether the Arizona court's ruling was "independent" of federal law, or whether it reflected impermissible hostility toward federal rights.
Concurrences and dissents
Dissent — Justice Barrett
“The Court makes a case for why the Arizona Supreme Court's interpretation of its own precedent is wrong. If I were on the Arizona Supreme Court, I might agree. But that call is not within our bailiwick.”Justice Barrett's core objection: the Supreme Court overstepped by substituting its judgment for Arizona's on a question of state procedural law.
Justice Barrett argued that the bar for finding a state procedural ruling 'inadequate' is extraordinarily high — requiring a decision so blatantly disingenuous as to reveal hostility toward federal rights. She contended the Arizona Supreme Court was addressing a genuine question of first impression: whether a Supreme Court ruling that corrects a mistaken application of existing law (without changing any legal doctrine) counts as a 'significant change.' She found the Arizona court's answer defensible under its prior cases, noted that federal habeas law draws the same law-versus-application distinction, and warned against second-guessing state courts' reasonable interpretations of their own procedural rules.
How the Court got there
The legal reasoning, step by step
- The 'adequate and independent state grounds' doctrine generally prevents federal courts from reviewing a constitutional claim when a state court's decision rests on a state procedural rule that is both independent of federal law and 'adequate' to support the judgment. This case turns entirely on adequacy.
- A state procedural rule is adequate only when it is 'firmly established and regularly followed.' An exception applies — reserved for the rarest of situations — when a state court's interpretation of its own procedural rule is so novel and unforeseeable that it lacks 'fair or substantial support in prior state law.' In that narrow circumstance, the procedural barrier cannot block federal review.
- Arizona Rule 32.1(g) allows a death-row defendant to file a second postconviction petition if there has been 'a significant change in the law.' Arizona courts had consistently defined this as a 'transformative event, a clear break from the past,' with the clearest example being when an appellate court overrules previously binding case law.
- Lynch v. Arizona (2016) did exactly that: it overruled an entire line of binding Arizona Supreme Court precedents that had incorrectly held that the Simmons constitutional rule did not apply in Arizona. By Arizona's own settled definition, this was a textbook 'significant change in the law,' and there was no prior Arizona decision suggesting otherwise.
- The Arizona Supreme Court instead drew a brand-new distinction — that Lynch was only a 'change in the application of the law,' not a 'change in the law' itself — without citing any prior authority for that distinction. This created an impossible catch-22: to satisfy Arizona's retroactivity requirement, Cruz had to argue Lynch applied settled law, but doing so meant Lynch could not be a 'significant change in the law' under the new rule. Earlier Arizona decisions created no such trap.
- Because the Arizona court's interpretation was wholly unprecedented, conflicted with its own prior statements about what Rule 32.1(g) requires, and generated a logical impossibility that prior decisions had never produced, it was too novel and unfounded to count as an 'adequate' state procedural ground — meaning the federal constitutional claim cannot be dismissed on that basis.