the State agency failed substantially to enforce the eligibility requirement established in section 6(t) in a fiscal year, the Secretary shall reduce by 15 percent the amount otherwise payable under subsection (a) to such State agency for the immediately succeeding fiscal year. . (c) Effective date The amendments made by this section shall take effect 240 days after the date of the enactment of this Act. 4. Drug screening and testing under public housing and section 8 rental assistance programs (a) Prohibition Section 214 of the Housing and Community Development Act of 1980 ( 42 U.S.C. 1436a ) is amended by adding at the end the following: (j) Prohibition of housing assistance for individuals who fail drug screening or testing or are not screened or tested (1) In General Notwithstanding any other provision of law, the applicable administrative entity may not make covered housing assistance available for the benefit of any individual who has attained 18 years of age, unless, before such assistance is provided with respect to such individual— (A) the applicable administrative entity makes a determination, in a manner the entity considers appropriate, of whether the individual has or has not been arrested for a drug-related offense during the 5-year period immediately preceding the date on which the determination is made