Boyd v. Hamm
The Supreme Court refused to halt Alabama's execution of Anthony Boyd or to hear his appeal, allowing the state to proceed with nitrogen hypoxia — a method that, according to a three-justice dissent, causes up to seven minutes of conscious terror — instead of the firing squad Boyd requested.
The decision continues a pattern in which the Court has declined to intervene in nitrogen hypoxia executions despite accumulating eyewitness accounts describing violent convulsions, gasping, and apparent prolonged consciousness in each of Alabama's seven executions using the method.
How it got here: Boyd challenged nitrogen hypoxia in federal district court, which denied his injunction; the Eleventh Circuit denied a stay; Boyd then asked the Supreme Court for a stay and certiorari, both of which were denied.
The Case in Depth
What happened
Anthony Boyd was sentenced to death in Alabama. The state planned to execute him by nitrogen hypoxia, in which a mask pumps pure nitrogen gas into the condemned person's lungs, displacing oxygen and triggering an overwhelming instinct to breathe. Boyd argued that eyewitness accounts of Alabama's prior nitrogen hypoxia executions — showing violent convulsing, gasping, and apparent consciousness lasting two to four minutes or more — proved the method inflicted unnecessary suffering. He asked instead to die by firing squad, which he said would render him unconscious in three to six seconds.
The question before the Court
Should Alabama be allowed to execute Anthony Boyd using nitrogen hypoxia — a method witnesses say causes minutes of conscious suffocation — when he asked to be shot by firing squad instead, which would cause death in seconds?
The Court's answer
No — the Court refused to pause Boyd's execution or agree to hear his appeal, allowing Alabama to proceed. Six justices let the lower courts' decisions stand; the Court offered no explanation for its action.
Three justices dissented, arguing that Boyd had a strong enough legal claim to warrant at least a temporary halt. The dissent contended that both the district court and the Eleventh Circuit made a critical error by treating the prolonged conscious suffocation of nitrogen hypoxia as no different from the ordinary dread any condemned person feels before any execution — a distinction the dissent said the Constitution requires courts to make.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Boyd was executed by nitrogen hypoxia on October 23, 2025. The Court's refusal to act leaves no legal obstacle to continuing nitrogen hypoxia executions in Alabama and Louisiana. Condemned prisoners in those states who object to the method will continue to face the same legal hurdles Boyd did, and the constitutional question of whether nitrogen hypoxia is cruel and unusual punishment remains unresolved by a full merits ruling.
What changes now
Boyd's execution took place on October 23, 2025. Because the Court denied certiorari rather than issuing a merits ruling, no binding precedent was set on whether nitrogen hypoxia is constitutional. Future condemned prisoners in Alabama or Louisiana may bring similar challenges, though they will face the same procedural hurdles Boyd did. The dissent's detailed factual record of seven executions could become evidence in those future cases.
What this does not decide
The Court did not decide whether nitrogen hypoxia is constitutional under the Eighth Amendment — it only declined to pause the execution and declined to hear the appeal. The underlying legal question of whether nitrogen hypoxia crosses the line into cruel and unusual punishment remains open for a future full merits case.
Concurrences and dissents
Dissent — Justice Sotomayor
Justice Sotomayor, joined by Justices Kagan and Jackson, argued that the Court should have halted the execution and agreed to hear Boyd's appeal. She detailed eyewitness accounts from Alabama's seven prior nitrogen hypoxia executions — each showing violent convulsions, gasping, and apparent consciousness lasting minutes — and argued that two to seven minutes of conscious suffocation is constitutionally distinct from the ordinary fear any condemned person faces, and vastly worse than the seconds of pain a firing squad would inflict.
How the Court got there
The legal reasoning, step by step
- Boyd's claim rested on the Eighth Amendment's ban on cruel and unusual punishment. Under the Court's 2019 ruling in Bucklew v. Precythe — the leading case on execution-method challenges — a condemned person must show that the state's chosen method imposes severe pain or terror beyond what is inherent in any execution, AND that a readily available alternative would significantly reduce that risk. The dissent argued Boyd satisfied both parts of this test.
- A federal district court held a two-day evidentiary hearing. Both sides' experts agreed that a condemned person experiences intense psychological suffering — described as a 'primal urge to breathe while knowing that breathing will cause death' — from the moment the nitrogen gas starts flowing until the person loses consciousness. The critical factual dispute was how long that conscious period lasts: the court accepted it typically lasts two minutes but could extend to seven.
- The district court rejected Boyd's claim by reasoning that the psychological distress of knowing one is about to die is present in every execution, so the distress during a nitrogen hypoxia execution was not meaningfully 'extra.' The dissent said this was a fundamental error: ordinary anticipatory dread before an execution is not the same as up to seven minutes of active, conscious suffocation once the gas begins flowing.
- On the firing squad as an alternative, the district court found it 'feasible' and 'readily implementable' but still rejected it, reasoning that the anticipatory fear before a firing-squad execution would be equal, while the firing squad adds physical pain after the shots are fired. The dissent countered that three to six seconds of firing-squad pain is vastly different from up to seven minutes of nitrogen-hypoxia suffocation — a difference the dissent described as up to 140-fold in duration.
- The Eleventh Circuit upheld the district court, finding no abuse of discretion. The Supreme Court, without explanation, then denied both the request to pause the execution and Boyd's request for the Court to take up the case — meaning the lower courts' rulings stand and the execution proceeded.