What Happens If the National Flood Insurance Program (NFIP) Lapses? [Updated January 14, 2019] [open pdf - 132KB]
"This Insight provides a short overview of what would happen if the National Flood Insurance Program (NFIP) were not to be reauthorized by May 31, 2019, and allowed to lapse. [...] The National Flood Insurance Program (NFIP) is authorized by the National Flood Insurance Act of 1968 (Title XIII of P.L. 90-448, as amended, 42 U.S.C. §§4001 et seq.). The NFIP does not contain a single comprehensive expiration, termination, or sunset provision for the whole of the program. Rather, the NFIP has multiple different legal provisions that tie to the expiration of key components of the program."
CRS Insight, IN10835
Congressional Research Service: https://crsreports.congress.gov/