; and (2) each grantee of such amounts shall use not less than 50 percent of the amounts received only for providing assistance for persons or families experiencing homelessness or at risk of homelessness, who have incomes not exceeding 50 percent of the median income for the relevant geographic area; except that the Secretary may waive the requirement under this paragraph if the grantee demonstrates to the satisfaction of the Secretary that the population in the geographic area served by the grantee having such incomes is sufficiently being served with respect to activities eligible for funding with such amounts. (c) Definition of at risk of homelessness For purposes of assistance made available with amounts made available pursuant to subsection (a), section 401(1) of the McKinney-Vento Homeless Assistance Act shall be applied, during the period that begins on the date of the enactment of this Act and ends upon the expiration of the 6-month period that begins upon the termination by the Federal Emergency Management Agency of the emergency declared on March 13, 2020, by the President under the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 4121 et seq.) relating to the Coronavirus Disease 2019 (COVID-19) pandemic, as if subparagraph (C) were repealed. (d) 3-Year availability Each grantee of amounts made available pursuant to subsection (a) shall expend— (1) at least 60 percent of such grant amounts within 2 years of the date that such funds became available to the grantee for obligation