In New York City there is an agency called "The Office of Mental Retardation and Developmental Disabilities."
There is a fascinating article about how this agency has resisted changing their name.*
>The debate over erasing the term “retarded” illustrates the issues that can arise as language shifts. Terminology was important to the parents who fought on behalf of children who until the 1950s were labeled “moron” or “imbecile.” For them, the initial popularizing of the term “mentally retarded” was a victory. A once-hidden population now had a name and a state agency.