; and (B) with respect to matters relating to the Thrift Savings Plan, be prescribed by the Executive Director (as defined by section 8401(13)). (2) Refunds Notwithstanding subsection (b), the regulations under paragraph (1)(A) shall, in the case of a Member who has not completed at least 5 years of civilian service as of the date of enactment of this section, provide that the lump-sum credit shall be payable to such Member to the same extent and in the same manner as if such Member satisfied paragraphs (1) through (4) of section 8424(a) as of such date of enactment. (e) Exclusions For purposes of this section, the term Member does not include the Vice President. (f) Opt-In for Members Not later than 90 days after the date of enactment of this section, a Member covered by this chapter as of such date may elect, by giving notice in writing to the official by whom such Member is paid, to remain subject to this chapter. . (b) Clerical amendment The table of sections at the beginning of chapter 84 of title 5, United States Code, is amended by inserting after the item relating to section 8425 the following: 8425a. Termination of further retirement coverage of Members of Congress. .