Prohibits FEMA from delaying or deferring issuance of letters of map revision (LOMR) or conditional letters of map revision (CLOMR) on the sole basis that fill has been placed on a property. The change is temporary: it stays in effect until the FEMA Administrator has fully implemented the Endangered Species Act requirements described in two biological opinions issued by the Fish and Wildlife Service and NOAA, and it does not alter the substantive review or issuance steps for those letters.