Michael Johnson / The Advocate via AP pool fileLethal InjectionLouisiana bill to legalize nitrogen gas executions passes special session
Courtesy ACLULethal InjectionNorth Carolina hearing over alleged racial bias in jury selection could upend death sentences
Justine Goode / NBC News; Getty Images; Family HandoutLethal InjectionAlabama AG calls first nitrogen gas execution ‘textbook,’ but witnesses say inmate thrashed in final moments
NBC NewsLethal InjectionAlabama inmate Kenneth Smith put to death in first U.S. nitrogen gas execution
Alabama Department of Corrections via APLethal InjectionAlabama can proceed with first nitrogen gas execution in U.S., appeals court rules
Alabama Dept. of CorrectionsLethal InjectionExecution of James Barber, first Alabama inmate to be put to death after state's pause, can proceed
Alabama Dept. of CorrectionsLethal InjectionAlabama death row inmate skeptical about state's ability to carry out his upcoming execution
Jaconna Aguirre / AP fileLethal InjectionOklahoma death row inmate rejects clemency hearing because he says it won't make a difference
Florida Department of Corrections / APLethal InjectionFlorida man executed for 1984 killings of teenage babysitter and a mother of 2
Janelle Stecklein / Community Newspaper Holdings Inc. via AP fileLethal InjectionDeath row inmate Richard Glossip's murder conviction upheld by court
Paul Harris / Getty Images fileLethal InjectionTop Tennessee officials overseeing executions 'incorrectly testified' under oath they were testing drugs before use
Jeremy S. Weis / Federal Public Defender Office via APLethal InjectionAmber McLaughlin, the first openly transgender person to be executed in the U.S., dies by lethal injection
Arizona Department of Corrections / APLethal InjectionJudge denies death row inmate's appeal, saying Constitution 'does not require a pain-free execution'
APLethal InjectionArizona executes inmate in state's first use of capital punishment in nearly a decade
Missouri Dept. of Corrections / via APLethal InjectionMissouri man whose death sentence was overturned three times is set to be executed
Tennessee Department of Correction via APLethal InjectionDeath row inmate facing execution this week has appeal denied despite new evidence
Theresa Najera / Valley Morning Star via AP fileLethal InjectionTexas prosecutor pushes back against pleas to stop execution of Melissa Lucio
Family photo via APLethal InjectionMelissa Lucio's case highlights police missteps in questioning abuse survivors, experts say
Theresa Najera / Valley Morning Star via AP fileLethal InjectionOnly Latina on Texas death row seeks clemency as execution looms
Jeremy Hogan / SOPA Images/LightRocket via Getty ImagesLethal InjectionProsecutors elected to uphold death penalty cases make a pledge: to end executions
Alabama Department of Corrections via AP fileLethal InjectionAlabama death row inmate who survived execution attempt dies of natural causes
Jeremy WeisLethal InjectionConvicted killer Ernest Johnson executed despite questions over his intellectual capacity
Jeff Roberson / AP fileLethal InjectionMissouri inmate scheduled to be executed despite request from pope