Boyd v. Hamm
The Supreme Court refused to block Alabama's execution of Anthony Boyd by nitrogen hypoxia, allowing the execution to proceed the same night over a sharp dissent from three justices who called the method unconstitutionally cruel.
The decision means Alabama and other states may continue using nitrogen hypoxia without Supreme Court intervention, even as documented accounts from seven prior executions describe violent convulsions and minutes of apparent conscious suffering.
How it got here: The District Court denied Boyd's request to block his execution; the Eleventh Circuit affirmed; Boyd applied to the Supreme Court for an emergency stay the same day as his scheduled execution.
The Case in Depth
What happened
Anthony Boyd, a man on Alabama's death row, argued that the state's execution method — forcing a person to inhale pure nitrogen gas — kept prisoners conscious and in severe psychological torment for two to seven minutes before they lost consciousness. He pointed to firsthand accounts from seven previous nitrogen hypoxia executions, all of which involved violent convulsing and gasping against restraints. Boyd asked the state to execute him by firing squad instead, which he said would render him unconscious in seconds.
The question before the Court
Can a death row prisoner in Alabama refuse execution by nitrogen hypoxia — arguing it causes prolonged conscious suffering — and instead demand death by firing squad?
The Court's answer
No — the Court declined to block Boyd's execution or to take up his case, providing no written reasoning for its decision. The two-sentence order denied both the request to pause the execution and the request to review the constitutional question, letting the execution proceed as scheduled that evening.
The Court's order does not decide on the merits whether nitrogen hypoxia violates the Eighth Amendment. It only declines, for now, to intervene — leaving the lower courts' rulings against Boyd in place.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Death row prisoners in states that use nitrogen hypoxia have no immediate path to Supreme Court review of claims that the method is torturous. Alabama can continue using the method without changes. For the eight states that have authorized nitrogen hypoxia and the broader public debate over execution methods, this order leaves the constitutional question unresolved on the merits.
What changes now
Because the Court denied both the stay and certiorari, Boyd's execution by nitrogen hypoxia proceeded the night of October 23, 2025. The order does not resolve the underlying constitutional question of whether nitrogen hypoxia is cruel and unusual punishment — that question remains open for future prisoners who bring similar claims. With seven nitrogen hypoxia executions now on record and three justices publicly calling the method unconstitutional, further litigation in lower courts is likely.
What this does not decide
The order does not decide whether nitrogen hypoxia is constitutional as an execution method. It only refuses to intervene in Boyd's case at this time. A future challenge by another prisoner — or a different lower-court record — could still reach the Court for a full ruling on the merits.
Concurrences and dissents
Dissent — Justice Sotomayor
Justice Sotomayor argued that the lower courts fundamentally misapplied the Eighth Amendment standard by treating the conscious terror of nitrogen hypoxia — lasting two to seven minutes — as no different from the anticipatory distress of any execution. She said the record from seven prior executions showed the method causes violent convulsions, gasping, and prolonged psychological torment. In her view, Boyd had clearly demonstrated that a firing squad would significantly reduce that suffering, and the Court should have granted the stay and agreed to hear the case.
How the Court got there
The legal reasoning, step by step
- The governing legal test for execution-method challenges comes from Bucklew v. Precythe (2019): to succeed under the Eighth Amendment's ban on cruel and unusual punishment, a prisoner must show that the state's chosen method imposes a 'superaddition of terror, pain, or disgrace' beyond what any execution inherently involves, AND that a feasible, readily available alternative would significantly reduce that risk — and that the state has refused to adopt it without a legitimate reason.
- Boyd argued nitrogen hypoxia meets that standard: experts on both sides agreed that a person remains conscious for at least two, and potentially up to seven, minutes after the gas begins flowing — during which the person consciously experiences an overwhelming, primal urge to breathe while knowing that breathing will cause death. His proposed alternative, the firing squad, would render a person unconscious in three to six seconds.
- The District Court denied relief after a two-day evidentiary hearing. It reasoned that psychological distress during a nitrogen hypoxia execution was merely an extension of the anticipatory distress any condemned prisoner feels before any execution, and that the firing squad posed its own risk of physical pain, so switching methods would not 'significantly reduce' suffering.
- The Eleventh Circuit affirmed, concluding the District Court had not abused its discretion in finding that Boyd's Eighth Amendment claim lacked merit. The Supreme Court, without any written explanation, denied both the application for a stay and Boyd's request that the Court hear the case.
- The three dissenting justices argued both lower courts misapplied Bucklew by treating the superadded psychological torment during the execution itself as equivalent to ordinary pre-execution anxiety, and by comparing methods over the full arc of the experience rather than focusing on what happens after the execution begins — a period where the dissent said nitrogen hypoxia lasts up to 140 times longer than a firing squad.