The alternative method requirement from Bucklew v. Precythe forces any death row prisoner challenging how a state plans to execute them to do more than prove the method will hurt. They must point to a specific, workable alternative the state could actually carry out, show it would meaningfully cut the risk of severe pain, and show the state has no legitimate reason to refuse it. Fail on any of those points and the Eighth Amendment claim ends, even if the pain evidence is strong.
The rule comes from the Supreme Court’s 5-4 decision in Bucklew v. Precythe (2019), and it governs every method-of-execution challenge in the country, whether the prisoner attacks the protocol in general or argues it is uniquely dangerous to them because of a medical condition.1Justia Supreme Court Center. Bucklew v. Precythe – 587 U.S. ___ (2019)
What the Prisoner Must Prove
The standard has three parts, and the burden sits with the prisoner at every step.
First, the state’s chosen method must pose a substantial risk of severe pain. The Court’s language is that the method must be “sure or very likely to cause serious illness and needless suffering,” creating a danger that is “sufficiently imminent.”2Supreme Court of the United States. Bucklew v. Precythe The Eighth Amendment does not guarantee a painless death. Some level of discomfort in dying does not, by itself, make an execution unconstitutional. The historical reference points are methods deliberately built to inflict terror and prolonged agony, and a modern protocol has to go well beyond ordinary risk to qualify.
Second, the prisoner must identify a feasible, readily implemented alternative. The Court described this as a method the state could carry out “relatively easily and reasonably quickly,” with enough concrete detail to show the necessary materials are obtainable.1Justia Supreme Court Center. Bucklew v. Precythe – 587 U.S. ___ (2019) This is the piece that trips most challenges.
Third, that alternative must significantly reduce the substantial risk of severe pain, and the state must have refused to adopt it without a legitimate penological reason.3Justia Supreme Court Center. Baze v. Rees – 553 U.S. 35 (2008) A modest improvement isn’t enough. The gap between the state’s method and the proposed one has to be substantial, and the state’s refusal has to be unjustified.
What Makes an Alternative Method “Feasible”
Naming a method is not enough. Russell Bucklew suffered from cavernous hemangioma, a rare condition that had produced blood-filled tumors in his throat and airway, and he argued Missouri’s lethal injection would rupture them and cause him to choke and suffocate on his own blood for several minutes. He proposed nitrogen gas as the alternative.
The Court rejected the proposal as too thin. Bucklew had not specified whether the nitrogen should be delivered by gas chamber, tent, hood, or mask, what concentration to use, how long the gas should flow, or how to protect the execution team from leaks. The majority called it a “bare-bones proposal” that fell “well short” of the standard.1Justia Supreme Court Center. Bucklew v. Precythe – 587 U.S. ___ (2019)
A workable proposal has to look almost like a draft execution protocol. Drug names and dosages if it involves drugs. Delivery mechanisms. Timing sequences. Sourcing for the materials. Safety procedures for the personnel involved. The prisoner effectively has to design a plausible plan and prove the state could implement it using commercially available equipment and obtainable substances.
Methods the State Hasn’t Authorized
The prisoner is not confined to methods already authorized by state statute. The Court said explicitly that the Eighth Amendment’s “comparative assessment…can’t be controlled by the State’s choice of which methods to authorize.”1Justia Supreme Court Center. Bucklew v. Precythe – 587 U.S. ___ (2019) So a prisoner in a lethal-injection-only state can propose the firing squad or nitrogen hypoxia. But that flexibility cuts the other way too: the state can raise reasons it declined to add the proposed method, and a court has to evaluate those reasons.
Legitimate Reasons a State Can Refuse
Even if the prisoner clears the first two hurdles, the state can still win by showing a legitimate penological reason for sticking with its current method. The Court gave several examples. A state cannot be faulted for failing to obtain drugs it genuinely cannot procure. A state may prefer a method it considers more dignified. A state is not required to adopt a protocol that depends on professionals whose ethical rules prohibit participation.1Justia Supreme Court Center. Bucklew v. Precythe – 587 U.S. ___ (2019)
The Court also held that a state’s unwillingness to be the first jurisdiction to try an untested method is itself a legitimate reason to refuse it. That reasoning directly sank Bucklew’s nitrogen proposal, since no state had ever used nitrogen for an execution at the time. Alabama executed Kenneth Smith by nitrogen hypoxia on January 25, 2024, the first such execution in American history. Whether that changes the “untested method” calculus in future challenges will depend on how courts read the record from that execution and the ones that follow. The broader principle stands: a state does not have to be a pioneer.
Why Meeting the Standard Is Harder Than It Reads
Two features of the current landscape make the alternative method requirement especially difficult to satisfy in practice.
One is state secrecy. More than a dozen states have enacted laws that shield the identities of execution drug suppliers, compounding pharmacies, and sometimes the execution team itself. To prove the state’s protocol creates a substantial risk of severe pain, a prisoner needs to know what drugs the state plans to use, where they came from, and how they were manufactured. When the state refuses to disclose that information under a secrecy statute, building the evidentiary case becomes dramatically harder. Courts have generally declined to strike down these laws, and the Supreme Court has not directly addressed whether they impermissibly obstruct Eighth Amendment challenges.
The other is expert testimony. Bucklew claims live or die on expert evidence, and the pool of qualified experts is narrow by design. The American Medical Association’s ethics code states that “a physician must not participate in a legally authorized execution,” and defines participation to include “rendering of technical advice regarding execution.”4American Medical Association. Capital Punishment Testifying about a prisoner’s medical history or condition is not considered participation. Advising on how to carry out an execution more humanely, which is essentially what designing an alternative method requires, falls squarely within the prohibition. An anesthesiologist may testify that a state protocol will cause severe pain more readily than they will help design a better one. That asymmetry compounds the evidentiary burden, because the prisoner has to present detailed expert evidence on both sides of the comparison.
Behind both problems sits a shrinking drug supply. Major pharmaceutical manufacturers have imposed sales restrictions preventing their products from being used in executions, and some have sued states that tried to buy drugs for that purpose. States have turned to compounding pharmacies, imported unapproved substances, and other sources outside normal regulatory oversight, where there is little assurance the drugs contain the correct active ingredients at proper dosages or were manufactured and stored properly. Subpotent or degraded drugs directly increase the risk of a painful execution, which is exactly the kind of harm a Bucklew challenge is meant to address, and yet the secrecy laws often prevent the prisoner from proving the risk exists.
Timing and Last-Minute Stays
The Bucklew majority spent significant attention on delay, and this is where an otherwise viable claim can quietly die. The Court warned that last-minute stays of execution “should be the extreme exception, not the rule,” and instructed lower courts to “police carefully” against litigation used to “interpose unjustified delay.”2Supreme Court of the United States. Bucklew v. Precythe Courts must weigh the state’s “strong interest in enforcing its criminal judgments” and apply a “strong equitable presumption” against granting a stay when the claim could have been raised earlier.
A prisoner who files a method-of-execution challenge weeks before a scheduled execution, raising arguments that were available years earlier, faces an uphill battle regardless of the claim’s merits. Courts may deny the stay on timeliness grounds alone. Even a strong substantive case can lose the right to be heard by being raised too late.
Where the Standard Came From
The alternative method requirement did not appear for the first time in Bucklew. It began with Baze v. Rees (2008), where a three-justice plurality upheld Kentucky’s three-drug lethal injection and said a successful method-of-execution claim required a showing of a “substantial” or “objectively intolerable” risk of serious harm plus a “feasible, readily implemented” alternative that would “significantly reduce” that risk.3Justia Supreme Court Center. Baze v. Rees – 553 U.S. 35 (2008) Because only three justices joined that opinion, lower courts were uncertain whether the requirement was binding.
Glossip v. Gross (2015) settled that. A five-justice majority adopted the Baze plurality’s framework and made the alternative method requirement binding law.5Justia Supreme Court Center. Glossip v. Gross – 576 U.S. 863 (2015) The Court’s stated reason was that without the requirement, any method-of-execution challenge would effectively become a challenge to the death penalty itself, since every method carries some risk. Bucklew then extended the framework to individualized, as-applied challenges based on a prisoner’s specific medical condition, closing what some had assumed was an exception.
The Dissent’s Objection
Four justices saw the requirement very differently. Justice Breyer, joined by Justices Ginsburg, Sotomayor, and Kagan, argued that Bucklew had raised a genuine factual dispute about whether Missouri’s protocol would cause him to choke on his own blood, and that the alternative method requirement should not apply to individualized as-applied challenges at all. Holding a protocol unconstitutional for a prisoner with a condition identified in only five people worldwide would not threaten the death penalty’s general validity.2Supreme Court of the United States. Bucklew v. Precythe
Breyer also argued that Bucklew satisfied the requirement even under the majority’s framework, because nitrogen hypoxia was permitted under Missouri law and had been authorized by other states. He called the majority’s demand for a detailed implementation protocol an “invented” and “insurmountable hurdle.” Justice Sotomayor filed a separate dissent going further, saying there is “no sound basis in the Constitution for requiring condemned inmates to identify an available means for their own executions.”1Justia Supreme Court Center. Bucklew v. Precythe – 587 U.S. ___ (2019)
Those criticisms continue to animate the debate around the standard. Whether it endures unchanged, evolves, or eventually gives way will depend on how lower courts apply it to challenges involving drug supply failures, novel methods, and the record of nitrogen hypoxia executions now being built. For any prisoner filing a claim today, though, the answer is what the Bucklew majority set out: identify a specific, workable, meaningfully safer alternative, or the challenge will not survive.