a unit of general local government or an Indian tribe, as those terms are defined in section 102 of the Housing and Community Development Act of 1974 (
42 U.S.C. 5302), that has demonstrated an objective improvement in housing supply growth, as determined by the Secretary, whose methodology for determining such improvement is published in the Federal Register to allow for public comment not less than 90 days before the date on which the notice of funding opportunity is made available.