From the Document: "In July 2019, under U.S. Attorney General Barr's direction, the Bureau of Prisons (BOP) adopted a revised Federal Execution Protocol Addendum and promptly scheduled the executions of five federal death row inmates. The addendum replaced the previous three-drug protocol used in federal executions with a single-drug procedure. Five death row inmates, who were sentenced to death in 1999, 2003, and 2004, were scheduled to be executed at U.S. Penitentiary Terre Haute, IN. After delay due to ongoing appeals, the execution of Daniel Lewis Lee on July 14, 2020, ended a 17-year moratorium on the federal death penalty. This Insight focuses on federal death penalty policy in the context of death penalty practice in the country overall."
CRS Insight, IN11474
Congressional Research Service: https://crsreports.congress.gov/