Whether retroactive application of a parole board policy to revoke the good time credits of a parolee violates the Ex Post Facto Clause

QUESTION PRESENTED Petitioner committed several offenses in the 1980s. He received lengthy consecutive sentences, began serving them, and earned credit for good behavior. In 1994, the state legislature amended the applicable statute to allow the parole board to revoke the good time credit of mandatory parolees who violated parole. In 1995, the parole board adopted a policy requiring such revocation. Petitioner received mandatory parole in 2013 and later violated parole. Under the 1995 policy, more than twenty-three years of good time credit he earned while serving the sentences imposed in the 1980s was retroactively revoked and added to his sentence. The question presented is whether retroactive application of a parole board policy to revoke the good time credits of a parolee violates the Ex Post Facto Clause.