; and (II) by striking subparagraph (B); and (ii) in paragraph (2)(D)— (I) by striking paragraphs (1)(B)(i) and (2)(B) of subsection (b) and inserting subsection (b)(1)(B)(i) ; and (II) by striking in all families and in 2-parent families, respectively, . (2) Conforming amendment The paragraph heading for section 409(a)(3) of such Act ( 42 U.S.C. 609(a)(3) ) is amended by striking Rates and inserting Rate . (b) Application of state option for participation requirement exemption to all families Section 407(b)(4) of the Social Security Act ( 42 U.S.C. 607(b)(4) ), as redesignated and amended by subsection (a)(1)(B), is amended— (1) by striking an individual who is a single custodial parent caring for and inserting a family that includes