Provided further , That in carrying out the preceding proviso, the Secretary shall not take actions that delay the development of such products: Provided further, That products purchased with funds appropriated in this paragraph may, at the discretion of the Secretary of Health and Human Services, be deposited in the Strategic National Stockpile under section 319F–2 of the Public Health Service Act ( PHS Act ): Provided further , That funds appropriated under this heading in this Act may be transferred to, and merged with, the fund authorized by section 319F–4, the Covered Countermeasure Process Fund, of the PHS Act: Provided further , That funds appropriated under this heading in this Act may be used for grants for the construction, alteration, or renovation of non-Federally owned facilities to improve preparedness and response capability at the State and local level: Provided further , That funds appropriated under this heading in this Act may be used for the construction, alteration, or renovation of non-Federally owned facilities for the production of vaccines, therapeutics, and diagnostics where the Secretary determines that such a contract is necessary to secure sufficient amounts of such supplies: Provided further , That of the amount provided under this heading in this Act, $1,635,000,000 shall be for expenses necessary to carry out section 319F–2(a) of the PHS Act: Provided further , That of the amount provided under this heading in this Act, not less than $500,000,000 shall be available to the Biomedical Advanced Research and Development Authority for acquisition, construction, or renovation of privately owned U.S.-based next generation manufacturing facilities: Provided further , That not later than seven days after the date of enactment of this Act, and weekly thereafter until the Secretary declares the public health emergency related to coronavirus no longer exists, the Secretary shall report to the Committees on Appropriations of the House of Representatives and the Senate on the current inventory