In 2002 the U.S. Supreme Court barred the execution of the intellectually disabled. But states have the ability to decide who is given the label of "mentally retarded." (This outdated term is used throughout this story since it’s the language in the court case.) The U.S. Supreme Court heard a case that questions what standards states may use in determining whether a defendant convicted of murder is mentally deficient. Listen to hear about this argument.
Story Length: 3:47
© 2016 National Public Radio, Inc. Used with the permission of NPR. All rights reserved.