Longest serving death row inmate in US resentenced to life JUAN A. LOZANO, Associated Press June 9, 2021 FacebookTwitterEmail This photo provided by the Texas Department of Criminal Justice shows Raymond Riles. Riles, the longest serving death row inmate in the U.S. was resentenced to life in prison on Wednesday, June 9, 2021 after prosecutors in Texas concluded the 71-year-old man is ineligible for execution and incompetent for retrial due to his long history of mental illness. (Texas Department of Criminal Justice via AP, File)AP HOUSTON (AP) — The longest serving death row inmate in the U.S. was resentenced to life in prison on Wednesday after prosecutors in Texas concluded the 71-year-old man is ineligible for execution and incompetent for retrial due to his long history of mental illness.