shall be allowed under subsection (d) to a taxpayer with respect to any qualifying child unless the taxpayer includes the social security number of such child on the return of tax for the taxable year. For purposes of the preceding sentence, the term social security number means a social security number issued to an individual by the Social Security Administration, but only if the social security number is issued to a citizen of the United States or is issued pursuant to subclause (I) (or that portion of subclause (III) that relates to subclause (I)) of section 205(c)(2)(B)(i) of the Social Security Act. . (b) Effective date The amendment made by this section shall apply to taxable years beginning after December 31, 2017. 11023. Increased limitation for certain charitable contributions (a) In general Section 170(b)(1) is amended by redesignating subparagraph (G) as subparagraph (H) and by inserting after subparagraph (F) the following new subparagraph: (G) Increased limitation for cash contributions (i) In general In the case of any contribution of cash to an organization described in subparagraph (A), the total amount of such contributions which may be taken into account under subsection (a) for any taxable year beginning after December 31, 2017, and before January 1, 2026, shall not exceed 60 percent of the taxpayer’s contribution base for such year. (ii) Carryover If the aggregate amount of contributions described in clause (i) exceeds the applicable limitation under clause (i) for any taxable year described in such clause, such excess shall be treated (in a manner consistent with the rules of subsection (d)(1)) as a charitable contribution to which clause (i) applies in each of the 5 succeeding years in order of time. (iii) Coordination with subparagraphs (a) and (b) (I) In general Contributions taken into account under this subparagraph shall not be taken into account under subparagraph (A). (II) Limitation reduction Subparagraphs (A) and (B) shall be applied for each taxable year described in clause (i),