; or (C) the date that occurs 18 months after the date of issuance of regulations under subsection (j). (l) Definitions In this section, the following definitions apply: (1) Child The term child means a biological, foster, or adopted child, a stepchild, a child of a domestic partner, a legal ward, or a child of a person standing in loco parentis. (2) Commerce The terms commerce and industry or activity affecting commerce mean any activity, business, or industry in commerce or in which a labor dispute would hinder or obstruct commerce or the free flow of commerce, and include commerce and any industry affecting commerce , as defined in paragraphs (1) and (3) of section 501 of the Labor Management Relations Act, 1947 (29 U.S.C. 142 (1) and (3)). (3) Domestic partner (A) In general The term domestic partner , with respect to an individual, means another individual with whom the individual is in a committed relationship. (B) Committed relationship defined The term committed relationship means a relationship between 2 individuals, each at least 18 years of age, in which each individual is the other individual’s sole domestic partner and both individuals share responsibility for a significant measure of each other’s common welfare. The term includes any such relationship between 2 individuals, including individuals of the same sex, that is granted legal recognition by a State or political subdivision of a State as a marriage or analogous relationship, including a civil union or domestic partnership. (4) Domestic violence The term domestic violence has the meaning given the term in section 40002(a) of the Violence Against Women Act of 1994 ( 34 U.S.C. 12291(a) ), except that the reference in such section to the term jurisdiction receiving grant funding shall be deemed to mean the jurisdiction in which the victim lives or the jurisdiction in which the rail carrier involved is located. Such term also includes dating violence , as that term is defined in such section. (5) Employee The term employee means an individual who