has the meaning given the term in section 1370(a) of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4121(a) ), as amended by section 109 of this Act. I Reauthorization and affordability 101. Reauthorization (a) In general (1) Financing Section 1309(a) of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4016(a) ) is amended by striking September 30, 2023 and inserting September 30, 2028 . (2) Program expiration Section 1319 of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4026 ) is amended by striking September 30, 2023 and inserting September 30, 2028 . (3) Retroactive effective date If this Act is enacted after September 30, 2023, the amendments made by paragraphs (1) and (2) shall take effect as if enacted on September 30, 2023. (b) Continued operation during lapse of appropriations Section 1310(f) of the National Flood Insurance Act of 1968 ( 42 U.S.C. 4017(f) ) is amended— (1) by inserting (1) after (f)