; and (iii) in subparagraph (B), by striking the armed forces (other than the Coast Guard) and inserting such armed force . (c) Effective date The amendments made by this section shall take effect on October 1, 2019, and shall apply with respect to determinations of contributions to the Department of Defense Military Retirement Fund, and payments into the Fund, beginning with fiscal year 2021. 632. Modification of authorities on eligibility for and replacement of gold star lapel buttons (a) Expansion of authority To determine next of kin for issuance Section 1126 of title 10, United States Code, is amended— (1) in subsection (a), by striking widows, parents, and in the matter preceding paragraph (1); (2) in subsection (b), by striking the widow and to each parent and and inserting each ; and (3) in subsection (d)— (A) by striking paragraphs (1), (2), (3), and (4) and inserting the following new paragraph (1): (1) The term next of kin means individuals standing in such relationship to members of the armed forces described in subsection (a) as the Secretaries concerned shall jointly specify in regulations for purposes of this section.