42 Pa.C.S. § 6607

In prison conditions litigation, a government party, including an elected official who was not in office at the time of the execution of the consent decree, may petition the court to modify or vacate the terms of the consent decree previously entered into. The court shall have the power and authority to void or modify the consent decree at any time upon a showing that, whether in whole or in part, it violates the provisions of this act or for other cause.