Christopher Vialva, who was convicted for killing a couple as a teen in 1999, is the seventh federal execution this summer when Trump revived the punishment.
After a 17-year hiatus in federal executions, the government is set to kill seven people in two months, despite pending litigation on the legality of the killings.
Flowers was wrongly convicted of killing four people in 1996. The U.S. Supreme Court tossed out his conviction and death sentence in June 2019.
The Supreme Court cleared the way for the execution of Wesley Ira Purkey amid questions about his mental competency.
The injunction for Wesley Purkey, a 68-year-old who suffers from dementia, comes after the federal government resumed carrying out capital punishment this week.
The execution came over the objection of the victims’ family.
With conservatives in the majority, the court said “executions may proceed as planned.” The four liberal justices dissented.
A Buddhist monk "should not have to choose between his health and performing sacred religious duties" for an inmate set to be executed, the civil liberties group argues.
The justices rejected an appeal from four inmates who were convicted of killing children.
The move comes after a legal battle over the plan to resume federal executions for the first time since 2003.