expenditure period (A) In general An issue shall be treated as meeting the requirements of this paragraph if, as of the date of issuance, the issuer reasonably expects 100 percent of the available project proceeds to be spent for purposes described in section 101(c)(1) of the School Building Improvement Act of 2017 within the 6-year period beginning on such date of issuance. (B) Failure to spend required amount of bond proceeds within 6 years To the extent that less than 100 percent of the available project proceeds of the issue are expended at the close of the period described in subparagraph (A) with respect to such issue, the issuer shall redeem all of the nonqualified bonds within 90 days after the end of such period. For purposes of this paragraph, the amount of the nonqualified bonds required to be redeemed shall be determined in the same manner as under section 142. (e) Limitation on amount of bonds designated The maximum aggregate face amount of bonds issued during any calendar year which may be designated under subsection (d) by any issuer shall not exceed the limitation amount allocated under subsection (g) for such calendar year to such issuer. (f) National limitation on amount of bonds designated The national qualified school construction bond limitation for each calendar year is— (1) $10,000,000,000 for 2018, (2) $10,000,000,000 for 2019, and (3) $10,000,000,000 for 2020. (g) Allocation of limitation (1) Allocation among States Except as otherwise provided in this subsection, the limitation applicable under subsection (f) for any calendar year shall be allocated by the Secretary among the States in proportion to the respective amounts received by each State under part A of title I of the Elementary and Secondary Education Act of 1965 ( 20 U.S.C. 6311 et seq.) for the fiscal year ending in the preceding calendar year relative to the total such amount received by all States for such fiscal year. The limitation amount allocated to a State under the preceding sentence shall be allocated by the State