Illinois is considering legislation to amend the Illinois Post-Conviction Hearing Act (725 ILCS 5/122-), 1(a), to extend the concept of custody for state habeas corpus purposes to provide that: Any person imprisoned in the penitentiary or otherwise confined, or subject to being confined by the state, local, or federal government as a result of a state criminal conviction may institute a proceeding under this Article if the person asserts that: [sufficient grounds of legal invalidity exist].