(a) Has authority, under 18 U.S.C. 4201 et seq., to grant, modify, or revoke paroles of eligible U.S. prisoners serving sentences of more than 1 year, and is responsible for the supervision of parolees and prisoners mandatorily released prior to the expiration of their sentences, and for the determination of supervisory conditions and terms;

(b) Has responsibility in cases in which the committing court specifies that the Parole Commission shall determine the date of parole eligibility of the prisoner;

(c) Has responsibility for determining, in accordance with the Labor-Management Reporting and Disclosure Act of 1959 (29 U.S.C. 504), whether the service as officials in the field of organized labor or in labor oriented management positions of persons convicted of certain crimes is contrary to the purposes of that act; and

(d) Has responsibility under the Employee Retirement Income Security Act of 1974 (29 U.S.C. 1111), for determining whether persons convicted of certain crimes may provide services to, or be employed by, employment benefit plans.