Supreme Court Rejects Alabama's Nitrogen Gas Execution Bid After Lower Court Deemed Method Unconstitutional

The U.S. Supreme Court voted 6-3 to block Alabama from executing death row inmate Jeffery Lee using nitrogen gas on June 11, 2026, after a federal appeals court ruled the method unconstitutional Erie News Now. The high court offered no explanation for its decision, but the ruling came hours after Alabama Attorney General Steve Marshall filed an emergency petition to push the execution forward CBS News.
The case centers on nitrogen hypoxia — a method where a mask floods the inmate's lungs with pure nitrogen instead of breathable air. Alabama pioneered the method in January 2024. But witnesses at prior executions reported that inmates "shook and trembled" for several minutes, a detail that proved decisive for the courts Equal Justice Initiative.
The legal fight moved fast. On June 8, 2026, a three-judge panel of the 11th U.S. Circuit Court of Appeals reversed a lower court ruling, finding that up to three minutes of "air hunger" — the desperate urge to breathe — is intolerable under the Eighth Amendment paNOW. The next day, U.S. District Judge Emily Marks issued a permanent injunction barring Alabama from using nitrogen gas on Lee.
Judge Marks wrote that the nitrogen protocol "presents a substantial risk of serious harm — severe pain over and above death itself" NBC 15. She also ruled that Lee successfully identified the firing squad as a "feasible and readily implemented" alternative. That finding is key: under Eighth Amendment law, a condemned person must point to a viable substitute method to block an execution.
Lee, 49, was convicted of murdering Jimmy Ellis and Elaine Thompson in 1998. His jury voted 7-5 to recommend life in prison. But a judge overrode that vote and sentenced him to death Equal Justice Initiative. Alabama abolished judicial override in 2017, but did not apply the change to existing sentences. That means Lee sits on death row under a law the state has since repealed.
About 20% of Alabama's current death row population was sentenced through judicial override, according to Equal Justice Initiative. Legal advocates say the Supreme Court's refusal to allow Lee's execution could fuel new challenges from that group. Over 100 Alabama inmates since 1976 have had jury life recommendations overridden by judges.
Attorney General Marshall called the nitrogen protocol "reliable and humane" and argued the courts were overstepping state sovereignty CBS News. The state contends that any visible movement during an execution is an involuntary physical reaction, not a sign of conscious suffering. Governor Kay Ivey said through a spokesperson that she was "prepared to move forward" until the Supreme Court's rejection late on June 11 CBS News.
Alabama now faces a dilemma. Judge Marks' ruling says the firing squad is a feasible alternative. But the state currently has no formal protocol or equipment for that method CBS News. Building one could delay executions for months or even years. Other states exploring nitrogen gas — including Indiana — may also pause those plans following this ruling The Indiana Lawyer.
Alabama carried out seven nitrogen executions before this ruling. Louisiana added one more, bringing the total to eight nationwide Washington Times. The first, in January 2024, was Kenneth Smith. Medical experts including anesthesiologist Dr. Joel Zivot have repeatedly challenged the state's claim that nitrogen causes "almost immediate" unconsciousness. UN human rights experts warned that the method could amount to torture The Guardian.
Legal analysts say the 11th Circuit's ruling sets a new standard: a specific window of suffering — 60 to 180 seconds — is now enough to cross the constitutional line. The court shifted focus from the state's intent to the inmate's experience. That shift, analysts say, is a rare move by the federal judiciary against an execution method FindLaw.
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