He was involved in the case of Miller v. Alabama, where the U.S. Supreme Court held that mandatory sentences of life without the possibility of parole are unconstitutional for juvenile offenders. He represented a client who was given a mandatory sentence of life without the possibility of parole for a crime he was convicted of committing while he was a juvenile. He was successful in getting the original sentence of life without the possibility of parole vacated. The client was re-sentenced to life with possibility of parole.