NEW YORK (AP) — Prosecutors say Ronell Wilson is a calculating murderer who executed two New York City police detectives.
Wilson's lawyers were able to convince a judge that he is a person of such low intelligence that he can't legally be put to death.
The convict and others like him are at the center of a debate over how to enforce a U.S. Supreme Court ruling that it is unconstitutional to execute killers who are "intellectually disabled."
The court in a 2014 ruling said that judges and juries should go beyond mere IQ scores to consider intelligence.
A federal judge who revisited Wilson's case tossed out his death sentence this week.
A similar review led a judge in California to reduce a death sentence given to a man murdered his 12-year-old stepdaughter.