made by this section (other than the amendments made by subsection (f)(3)), the State plan shall not be regarded as failing to comply with the requirements of such title solely on the basis of its failure to meet these additional requirements before the first day of the first calendar quarter beginning after the close of the first regular session of the State legislature that begins after the date of the enactment of this Act. For purposes of the previous sentence, in the case of a State that has a 2-year legislative session, each year of such session shall be deemed to be a separate regular session of the State legislature. 4. Reducing Medicare cost-sharing for low-income beneficiaries (a) In general Title XVIII of the Social Security Act ( 42 U.S.C. 1395 et seq.), as amended by section 2, is amended by adding at the end the following new section: 1899D. Reduction in Medicare cost-sharing for low-income beneficiaries (a) In general Notwithstanding any other provision of this title, in the case of items and services furnished on or after January 1, 2019, to an applicable low-income individual, the amount of any coinsurance or copayment otherwise applicable to the item or service under part A or B shall be reduced by 50 percent. (b) Applicable low-Income individual defined (1) In general In this section, the term applicable low-income individual means an individual— (A) entitled to, or enrolled for, benefits under part A or enrolled in part B