Florida is in the process of executing three of its oldest death row inmates back to back - each one older than the last.
An Alabama man convicted of helping to burn a man alive in 1993 over a $200 drug debt was executed by nitrogen gas on Thursday.
The federal charge that makes Luigi Mangione eligible for the death penalty must be dismissed because it does not meet the legal threshold, the defense says.
Indiana officials have executed a man convicted in the 2001 rape and murder of a teenage girl.
Milam has claimed he is innocent, blaming his then-girlfriend for the killing and alleging she was the one who claimed the girl was possessed by a demon.
Tennessee executed Byron Black on Tuesday for the 1988 murders of a woman and her two young daughters.