notwithstanding section 643(e)(2)(A) of the IDEA, if 5 or fewer States apply for grants pursuant to section 643(e) of such Act, the Secretary shall provide a grant to each State in an amount equal to the maximum amount described in section 643(e)(2)(B) of such Act: Provided further , That if more than 5 States apply for grants pursuant to section 643(e) of the IDEA, the Secretary shall award funds to those States on the basis of the States' relative populations of infants and toddlers except that no such State shall receive a grant in excess of the amount described in section 643(e)(2)(B) of such Act: Provided further , That States may use funds received under part C of the IDEA to make subgrants to local educational agencies, institutions of higher education, other public agencies and private nonprofit organizations to carry out activities authorized by such part. Rehabilitation services For carrying out, to the extent not otherwise provided, the Rehabilitation Act of 1973, the Helen Keller National Center Act, and the Randolph-Sheppard Act, $3,827,500,000, of which $3,667,801,000 shall be for grants for vocational rehabilitation services under title I of the Rehabilitation Act: Provided , That the Secretary may use amounts provided in this Act that remain available subsequent to the reallotment of funds to States pursuant to section 110(b) of the Rehabilitation Act for innovative activities aimed at improving the outcomes of individuals with disabilities as defined in section 7(20)(B) of the Rehabilitation Act, including activities aimed at improving the education and post-school outcomes of children receiving Supplemental Security Income ( SSI ) and their families that may result in long-term improvement in the SSI child recipient's economic status and self-sufficiency: Provided further , That States may award subgrants for a portion of the funds to other public and private, nonprofit entities: Provided further, That any funds made available subsequent to reallotment for innovative activities aimed at