date of the enactment of this subsection. (C) Exclusions No credit shall be awarded under this paragraph to any prisoner serving a sentence of imprisonment for conviction for any of the following offenses: (i) A Federal conviction for homicide in which the prisoner was proven beyond a reasonable doubt to have had the intent to cause death and death resulted. (ii) A Federal crime of terrorism, as defined under section 2332b(g)(5). (iii) A Federal sex offense, as described in section 111 of the Sex Offender Registration and Notification Act ( 42 U.S.C. 16911 ). (D) Participation by ineligible prisoners The Director of the Bureau of Prisons shall make all reasonable efforts to ensure that every prisoner participates in recidivism reduction programming or productive activities, including a prisoner who is excluded from earning time credits. (E) Other incentives The Director of the Bureau of Prisons shall develop policies to provide appropriate incentives for successful compliance with case plan requirements, in addition to the earned time credit described in subparagraph (A), including incentives for prisoners who are precluded from earning credit under subparagraph (C). Such incentives may include additional commissary, telephone, or visitation privileges for use with family, close friends, mentors, and religious leaders. (F) Penalties The Director of the Bureau of Prisons shall amend its Inmate Discipline Program to reduce credits previously earned under subparagraph (A) for prisoners who violate the rules of the institution in which the prisoner is imprisoned, a recidivism reduction program, or a productive activity, which shall provide— (i) levels of violations and corresponding penalties, which may include loss of earned time credits