affect the application of subchapter II of chapter 83. (f) Definition For the purpose of this section, the term Member service means, in the case of an individual subject to this chapter, service performed by such individual as a Member (as defined by section 8331 or 8401), including the period from the date of the beginning of the term for which elected or appointed to the date on which he takes office as such a Member. (g) Regulations The Office of Personnel Management shall prescribe any regulations necessary to carry out the purposes of this section, including provisions for the reduction or elimination of any payment under section 8421 and any other similar payment under this chapter supplemental to any annuity or survivor annuity reduced or eliminated under subsection (a). . (b) Clerical amendment The analysis for chapter 84 of title 5, United States Code, is amended by inserting after the item relating to section 8410 the following: 8410a. Expulsion from Congress. . 4. Conforming amendments Sections 8433(a) and 8437(d) of title 5, United States Code, are amended by inserting or 8410a(d) after 8432(g) . 5. Effective date The amendments made by this Act shall apply with respect to any expulsion which is based, in whole or in part, on any act committed or conduct engaged in after the date of the enactment of this Act.