the meaning given to that term in section 201 of the Federal Food, Drug, and Cosmetic Act. (g) Authorization of appropriations To carry out this section, there is authorized to be appropriated $3,500,000,000 for each of fiscal years 2021 through 2023, to remain available until expended. (h) Sunset The authority vested by this section terminates at the end of fiscal year 2023. . F Process Improvements and Reports 3051. GAO study on the feasibility and benefits of user fee agreements (a) In general The Comptroller General of the United States shall conduct a study to investigate the feasibility of establishing user fees to offset certain Federal costs attributable to the procurement of single-source materials for the Strategic National Stockpile under section 319F–2 of the Public Health Service Act ( 42 U.S.C. 247d–6b ) and distributions of such materials from the Stockpile. In conducting this study, the Comptroller General shall consider, to the extent information is available— (1) whether entities receiving such distributions generate profits from those distributions